---
hide:
  - navigation
  - footer
---

???+ question "Why do you see this notice?"

    The script of this project currently mainly serves Simplified Chinese users, but from the very beginning it was defined as a universal mirror switching script, providing many command options for customization, which is also one of the reasons why this project is now available to users of other languages. The script output is currently fixed in Simplified Chinese. With feedback and usage from users of other languages, the script may support Traditional Chinese and English in the future.

    The documentation is translated with tools, and some professional terms below may be inaccurate. Corrections are welcome.

## One-Click Command

=== ":material-home-city: Mainland China"

    !!! quote ""

        === ":linuxmirrors: Official Site (Recommended)"

            ``` bash
            bash <(curl -sSL https://linuxmirrors.cn/main.sh)
            ```

        === ":simple-github: GitHub"

            ``` bash
            bash <(curl -sSL https://raw.githubusercontent.com/SuperManito/LinuxMirrors/main/ChangeMirrors.sh)
            ```

        === ":simple-gitee: Gitee"

            ``` bash
            bash <(curl -sSL https://gitee.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh)
            ```
            > Real-time sync, no delay. Recommended for use in mainland China network environments.

        === ":gitcode: GitCode"

            ``` bash
            bash <(curl -sSL https://raw.gitcode.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh)
            ```
            > 1-hour sync delay.

        === ":simple-jsdelivr: jsDelivr (CDN)"

            ``` bash
            bash <(curl -sSL https://cdn.jsdelivr.net/gh/SuperManito/LinuxMirrors@main/ChangeMirrors.sh)
            ```

        === ":tencent-cloud: Tencent Cloud EO (CDN)"

            ``` bash
            bash <(curl -sSL https://edgeone.linuxmirrors.cn/main.sh)
            ```
            > Not supported in mainland China network environments.

=== ":material-earth: International Regions"

    !!! quote ""

        === ":linuxmirrors: Official Site (Recommended)"

            ``` bash
            bash <(curl -sSL https://linuxmirrors.cn/main.sh) --abroad
            ```

        === ":simple-github: GitHub"

            ``` bash
            bash <(curl -sSL https://raw.githubusercontent.com/SuperManito/LinuxMirrors/main/ChangeMirrors.sh) --abroad
            ```

        === ":simple-gitee: Gitee"

            ``` bash
            bash <(curl -sSL https://gitee.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh) --abroad
            ```
            > Real-time sync, no delay. Recommended for use in mainland China network environments.

        === ":gitcode: GitCode"

            ``` bash
            bash <(curl -sSL https://raw.gitcode.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh) --abroad
            ```
            > 1-hour sync delay.

        === ":simple-jsdelivr: jsDelivr (CDN)"

            ``` bash
            bash <(curl -sSL https://cdn.jsdelivr.net/gh/SuperManito/LinuxMirrors@main/ChangeMirrors.sh) --abroad
            ```

        === ":tencent-cloud: Tencent Cloud EO (CDN)"

            ``` bash
            bash <(curl -sSL https://edgeone.linuxmirrors.cn/main.sh) --abroad
            ```
            > Not supported in mainland China network environments.

=== ":material-library: China Education Network"

    !!! quote ""

        === ":linuxmirrors: Official Site (Recommended)"

            ``` bash
            bash <(curl -sSL https://linuxmirrors.cn/main.sh) --edu
            ```

        === ":simple-github: GitHub"

            ``` bash
            bash <(curl -sSL https://raw.githubusercontent.com/SuperManito/LinuxMirrors/main/ChangeMirrors.sh) --edu
            ```

        === ":simple-gitee: Gitee"

            ``` bash
            bash <(curl -sSL https://gitee.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh) --edu
            ```
            > Real-time sync, no delay. Recommended for use in mainland China network environments.

        === ":gitcode: GitCode"

            ``` bash
            bash <(curl -sSL https://raw.gitcode.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh) --edu
            ```
            > 1-hour sync delay.

        === ":simple-jsdelivr: jsDelivr (CDN)"

            ``` bash
            bash <(curl -sSL https://cdn.jsdelivr.net/gh/SuperManito/LinuxMirrors@main/ChangeMirrors.sh) --edu
            ```

        === ":tencent-cloud: Tencent Cloud EO (CDN)"

            ``` bash
            bash <(curl -sSL https://edgeone.linuxmirrors.cn/main.sh) --edu
            ```
            > Not supported in mainland China network environments.



!!! tip "Usage Help"

    The tabs represent the built-in mirror site types and script sources. Please check whether your target mirror site supports your operating system before use. You can check in the [Mirror List](../mirrors/index.md).  
    By default, the original mirror configuration will be automatically backed up. For more details, see the documentation below. If you are confused by some options during use, just press Enter all the way after selecting the mirror, which is the best practice.

    _It supports use in abnormal environments such as when the original system software source is damaged, missing, or invalid. There is no need to install any additional dependencies. The command defaults to obtaining the script content online, and no content will be downloaded to your computer during this period._

!!! quote "About Mirror Selection (Must Read for New Users)"

    If you are not familiar with these mirrors, it is recommended to use `Aliyun (high compatibility, strong availability)` or `USTC (fast speed)`. Don't worry about speed tests, the built-in mirrors generally do not differ much.  
    This project script is an automated operation and maintenance tool. It does not subjectively rank or customize mirrors. User choice should be free, which is also to better continue the spirit of open source software.

<div class="grid cards" markdown>

-   :material-numeric-1:{style="color: #3CA7E5" .lg} __Run the script as `ROOT` user__

    ---

    Switch command: `sudo -i` or `su root`. Different systems use different commands because some systems do not set a password for the ROOT account during initial installation (such as Ubuntu) or the system disables ROOT login by default.

-   :material-numeric-2:{style="color: #3CA7E5" .lg} __It is recommended to use a modern `SSH` client__

    ---

    If your terminal displays garbled Chinese, you will not be able to see the interactive content. Some GUI terminal apps may have unpredictable display issues. Some systems automatically enable SSH service; otherwise, see [how to enable SSH](#how-to-enable-ssh-remote-login).

-   :material-numeric-3:{style="color: #3CA7E5" .lg} __If running the script for the first time on a new system__

    ---

    The script relies on `curl` to fetch content, but some systems do not preinstall this package, resulting in `Command not found` errors. See [_About Command not found_](#about-command-not-found-error) below for installation. The script itself is unrelated to `curl` or `wget` and does not download any content.

-   :material-numeric-4:{style="color: #3CA7E5" .lg} __Interactive configuration is required during script execution__

    ---

    Use arrow keys ++arrow-up++++arrow-down++++arrow-left++++arrow-right++ or ++w++++a++++s++++d++ to control options and press ++enter++ to confirm. If interaction is abnormal, try resizing the terminal window and avoid full screen.

</div>

### FAQ

- #### About Command not found error

    !!! quote ""

        This error is caused by the system not having the `curl` package installed. Install it as follows:

        === "Debian-based / openKylin"

            ``` bash
            apt-get install -y curl
            ```

            > `Debian` &nbsp; `Ubuntu` &nbsp; `Kali` &nbsp; `Linux Mint` &nbsp; `Deepin` &nbsp; `Zorin OS` &nbsp; `Armbian` &nbsp; `Proxmox VE` &nbsp; `Raspberry Pi OS` &nbsp; `openKylin`

            For new systems, run `apt-get update` first.

        === "RedHat-based / openEuler / OpenCloudOS / Anolis OS"

            ``` bash
            dnf install -y curl || yum install -y curl
            ```

            > `Red Hat Enterprise Linux` &nbsp; `CentOS` &nbsp; `Rocky Linux` &nbsp; `AlmaLinux` &nbsp; `Fedora` &nbsp; `openEuler` &nbsp; `OpenCloudOS` &nbsp; `Anolis OS`

        === "openSUSE"

            ``` bash
            zypper install curl
            ```

        === "Arch Linux / Manjaro"

            ``` bash
            pacman -S curl
            ```

        === "Alpine Linux"

            ``` bash
            apk --no-cache add -f curl bash ncurses
            ```

        === "Gentoo"

            ``` bash
            emerge --ask curl
            ```

        === "NixOS"

            ``` bash
            nix-env -iA nixos.curl
            ```

        ??? question "Can't install? (Click to see more solutions)"

            If your system's original mirror is invalid and you can't install `curl`, here are some emergency ways to fetch the script online:

            === "Download with Python"

                Works for most systems (except `Alpine Linux`). If `python3` is missing, try `python`.
                ``` bash
                python3 -c "import urllib.request; urllib.request.urlretrieve('https://linuxmirrors.cn/main.sh', 'main.sh')"
                ```

            === "Download with wget"

                Usually, systems without `curl` also lack `wget`, so this may not work.
                ``` bash
                wget https://linuxmirrors.cn/main.sh
                ```

            === "Download with browser"

                If you have GUI access, open the link in a browser to download the script. Many systems preinstall Firefox.

            Then run the script:

            === ":material-home-city: Mainland China"

                ``` bash
                bash main.sh
                ```

            === ":material-earth: International Regions"

                ``` bash
                bash main.sh --abroad
                ```

            === ":material-library: China Education Network"

                ``` bash
                bash main.sh --edu
                ```

            If none of these work, copy the [source code](https://gitee.com/SuperManito/LinuxMirrors/raw/main/ChangeMirrors.sh) to a new `.sh` file and run it with `bash`.

- #### Backup of original mirrors

    !!! quote ""

        The script automatically backs up the original mirror configuration. The backup path is the original file or directory with `.bak` appended, e.g., `/etc/apt/sources.list => /etc/apt/sources.list.bak`. If a backup exists, you will be prompted whether to overwrite it.

- #### Restore backed up mirrors

    !!! quote ""

        === "Debian-based / openKylin"

            === "Traditional format"

                ``` bash
                cp -rf /etc/apt/sources.list.bak /etc/apt/sources.list
                apt-get update
                ```

            === "DEB822 format"

                ``` bash
                system_name="$(lsb_release -is | tr '[:upper:]' '[:lower:]')"
                cp -rf "/etc/apt/sources.list.d/${system_name}.sources.bak" "/etc/apt/sources.list.d/${system_name}.sources"
                apt-get update
                ```

            > `Debian` &nbsp; `Ubuntu` &nbsp; `Kali` &nbsp; `Linux Mint` &nbsp; `Deepin` &nbsp; `Zorin OS` &nbsp; `Armbian` &nbsp; `Proxmox VE` &nbsp; `Raspberry Pi OS` &nbsp; `openKylin`

        === "RedHat-based / openEuler / OpenCloudOS / Anolis OS"

            ``` bash
            cp -rf /etc/yum.repos.d.bak /etc/yum.repos.d
            yum makecache
            ```

            > `Red Hat Enterprise Linux` &nbsp; `CentOS` &nbsp; `Rocky Linux` &nbsp; `AlmaLinux` &nbsp; `Fedora` &nbsp; `openEuler` &nbsp; `OpenCloudOS` &nbsp; `Anolis OS`

        === "openSUSE"

            ``` bash
            cp -rf /etc/zypp/repos.d.bak /etc/zypp/repos.d
            zypper ref
            ```

        === "Arch Linux / Manjaro"

            ``` bash
            cp -rf /etc/pacman.d/mirrorlist.bak /etc/pacman.d/mirrorlist
            pacman -Sy
            ```

        === "Alpine Linux"

            ``` bash
            cp -rf /etc/apk/repositories.bak /etc/apk/repositories
            apk update -f
            ```

        === "Gentoo"

            ``` bash
            cp -rf /etc/portage/make.conf.bak /etc/portage/make.conf
            [ -d /etc/portage/repos.conf ] && cp -rf /etc/portage/repos.conf/gentoo.conf.bak /etc/portage/repos.conf/gentoo.conf
            emerge --sync --quiet
            ```

        === "NixOS"

            ``` bash
            cp -rf /etc/nix/nix.conf.bak /etc/nix/nix.conf
            ```

- #### How to enable SSH remote login

    !!! quote ""

        The commands and steps are for reference only and only cover some common distributions.

        - Check if `SSH` service is installed

            ``` bash
            ls /etc | grep ssh
            ```
            > If this folder does not exist, SSH is not installed. Install the `openssh` package with your package manager.  
            > Note that package names may differ; you can use `openssh*` as a wildcard.

        - Allow Root login

            ``` bash
            cat /etc/ssh/sshd_config | grep -Eq "^[# ]?PermitRootLogin " ; [ $? -eq 0 ] && sed -i 's/^[# ]\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config || echo -e "\nPermitRootLogin yes" >> /etc/ssh/sshd_config
            ```

        - Enable password authentication

            ``` bash
            cat /etc/ssh/sshd_config | grep -Eq "^[# ]?PasswordAuthentication " ; [ $? -eq 0 ] && sed -i 's/^[# ]\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config || echo -e "\nPasswordAuthentication yes" >> /etc/ssh/sshd_config
            ```

        - Start/restart `SSH` service

            ``` bash
            ps -ef | grep -q ssh ; [ $? -eq 0 ] && systemctl restart sshd || systemctl enable --now sshd
            ```
            > Service names may differ; if not `sshd`, try `ssh`.

- #### No arrow key interactive UI

    !!! quote ""

        If you see a text input instead of the new arrow key UI, install the `ncurses` or `nano` package. The new interaction relies on the `tput` command.

- #### About the script's online location

    !!! quote ""

        The project uses [GitHub Action](https://github.com/SuperManito/LinuxMirrors/blob/main/.github/workflows/build-docs.yml#L29) to automatically copy the source code to the docs directory after each commit for website publishing. The site is hosted on :netlify: [Netlify](https://www.netlify.com), with almost no risk of hijacking.

        You can also use the raw address from the code repository. This is just to explain why there are several different addresses; the default official site address is easier to remember and access.

- #### About mirror download speed

    !!! quote ""

        First, see the recommendations in the [Mirror List](../mirrors/index.md) usage help. These are based on experience, but some users still worry about speed.

        The network latency (`Ping`) of a mirror is not directly related to download speed. Distance does not equal experience. Some mirrors have high bandwidth but poor speed due to load strategies.

        There are many open source speed test scripts written in C or Python. This project is written in Bash Shell and does not depend on third-party libraries. Bash is the most common scripting language for Linux operations and is preinstalled on most distributions, so users can run it directly without installing anything. This convenience cannot be replaced by other languages. However, Bash scripts may not easily achieve accurate speed testing; using other languages for this is reinventing the wheel.

- #### About disabled repositories

    !!! quote ""

        Many systems have multiple repositories. The script follows the system default. Disabled repositories will not be enabled after running the script, but their URLs will be updated. To enable them:

        === "Debian-based / openKylin"

            By default, `deb-src` and `proposed` are disabled. Uncomment the relevant lines in `/etc/apt/sources.list` to enable.

            > `Debian` &nbsp; `Ubuntu` &nbsp; `Kali` &nbsp; `Linux Mint` &nbsp; `Deepin` &nbsp; `Zorin OS` &nbsp; `Armbian` &nbsp; `Proxmox VE` &nbsp; `Raspberry Pi OS` &nbsp; `openKylin`

        === "RedHat-based / openEuler / OpenCloudOS / Anolis OS"

            Some repos are disabled by default. Set `enabled=1` in the relevant repo files under `/etc/yum.repos.d`.

            > `Red Hat Enterprise Linux` &nbsp; `CentOS` &nbsp; `Rocky Linux` &nbsp; `AlmaLinux` &nbsp; `Fedora` &nbsp; `openEuler` &nbsp; `OpenCloudOS` &nbsp; `Anolis OS`

        === "openSUSE"

            Some repos are disabled by default. Set `enabled=1` in the relevant repo files under `/etc/zypp/repos.d`.


---

## Command Options (Advanced Usage)

| Name | Meaning | Value |
| - | - | :-: |
| `--abroad` | Use overseas mirrors | none |
| `--edu` | Use China education network mirrors | none |
| `--source` | Specify mirror address (domain or IP) | `address` |
| `--source-epel` | Specify EPEL repository address (domain or IP) | `address` |
| `--source-security` | Specify Debian/Ubuntu security repo address (domain or IP) | `address` |
| `--source-vault` | Specify CentOS/AlmaLinux vault repo address (domain or IP) | `address` |
| `--source-portage` | Specify Gentoo portage repo address (domain or IP) | `address` |
| `--source-base-system` | Specify Linux Mint/Raspberry Pi OS base system repo address (domain or IP) | `address` |
| `--branch` | Specify mirror repository (path) | `repo name` |
| `--branch-epel` | Specify EPEL repository (path) | `repo name` |
| `--branch-security` | Specify Debian security repo (path) | `repo name` |
| `--branch-vault` | Specify CentOS/AlmaLinux vault repo (path) | `repo name` |
| `--branch-portage` | Specify Gentoo portage repo (path) | `repo name` |
| `--branch-base-system` | Specify Linux Mint/Raspberry Pi OS base system repo (path) | `repo name` |
| `--codename` | Specify Debian/openKylin codename | `codename` |
| `--protocol` | Specify web protocol | `http` or `https` |
| `--use-intranet-source` | Prefer intranet mirror address | `true` or `false` |
| `--use-official-source` | Use official mirror of target OS | `true` or `false` |
| `--use-official-source-epel` | Use official EPEL repo | `true` or `false` |
| `--install-epel` | Install EPEL repository | `true` or `false` |
| `--backup` | Backup original mirrors | `true` or `false` |
| `--upgrade-software` | Upgrade packages | `true` or `false` |
| `--clean-cache` | Clean cache after upgrade | `true` or `false` |
| `--clean-screen` | Clear screen before running | `true` or `false` |
| `--print-diff` | Print diff before and after modification | `true` or `false` |
| `--only-epel` | Only switch EPEL repo | none |
| `--ignore-backup-tips` | Ignore backup overwrite prompt | none |
| `--pure-mode` | Pure mode, minimal output | none |
| `--help` | Show help menu | none |

> Full mirror format: `<Web protocol>://<mirror address (domain or IP)>/<repo path>`

Below are some advanced usage examples

- ### Specify mirror address

    ``` { .bash .no-copy }
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) --source mirror.example.com
    ```

- ### Specify mirror repository

    The repository here refers to the directory after the mirror site address, i.e., the repository directory on the mirror site. Although all are called repositories, it is easy to confuse.

    Main scenario: The target mirror site has a corresponding system repository but does not match the default rule in this script.

    ??? note "Default repo names for each OS (click to expand)"

        The script does not adapt to unique repo names of a single mirror site for compatibility.

        | OS Name | Names Involved |
        | --- | :---: |
        | <a href="https://www.debian.org" title="https://www.debian.org" target="_blank"><img src="/assets/images/icon/debian.svg" width="16" height="16" style="vertical-align: -0.35em"></a> **Debian** | `debian` `debian-archive` |
        | <a href="https://ubuntu.com" title="https://ubuntu.com" target="_blank"><img src="/assets/images/icon/ubuntu.svg" width="16" height="16" style="vertical-align: -0.15em"></a> **Ubuntu** | `ubuntu` `ubuntu-ports` |
        | <a href="https://www.kali.org" title="https://www.kali.org" target="_blank"><img src="/assets/images/icon/kali-linux.svg" width="16" height="16"></a> **Kali Linux** | `kali` |
        | <a href="https://linuxmint.com" title="https://linuxmint.com" target="_blank"><img src="/assets/images/icon/linux-mint.ico" width="16" height="16" style="vertical-align: -0.2em"></a> **Linux Mint** | `linuxmint` `ubuntu` `ubuntu-ports` `debian` |
        | <a href="https://www.deepin.org" title="https://www.deepin.org" target="_blank"><img src="/assets/images/icon/deepin.png" width="16" height="16" style="vertical-align: -0.2em"></a> **Deepin（深度）** | `deepin` |
        | <a href="https://zorin.com/os" title="https://zorin.com/os" target="_blank"><img src="/assets/images/icon/zorin-os.png" width="16" height="16" style="vertical-align: -0.15em"></a> **Zorin OS** | `ubuntu` `ubuntu-ports` |
        | <a href="https://www.armbian.com" title="https://www.armbian.com" target="_blank"><img src="/assets/images/icon/armbian.png" width="16" height="16" style="vertical-align: -0.2em"></a> **Armbian** | `armbian` |
        | <a href="https://www.proxmox.com/en/products/proxmox-virtual-environment/overview" title="https://www.proxmox.com/en/products/proxmox-virtual-environment/overview" target="_blank"><img src="/assets/images/icon/proxmox.svg" width="16" height="16" style="vertical-align: -0.2em"></a> **Proxmox VE** | `proxmox` |
        | <a href="https://www.raspberrypi.com/software" title="https://www.raspberrypi.com/software" target="_blank"><img src="/assets/images/icon/raspberry-pi.png" width="16" height="16" style="vertical-align: -0.2em"></a> **Raspberry Pi OS** | `raspberrypi` `raspbian` `debian` `debian-archive` |
        | <a href="https://access.redhat.com/products/red-hat-enterprise-linux" title="https://access.redhat.com/products/red-hat-enterprise-linux" target="_blank"><img src="/assets/images/icon/redhat.svg" width="16" height="16" style="vertical-align: -0.1em"></a> **Red Hat Enterprise Linux** :material-information-outline:{ title="Version 9 uses <code>CentOS Stream</code>, 7/8 use <code>CentOS</code>" } | `centos` `centos-stream` `centos-altarch` `centos-vault` |
        | <a href="https://fedoraproject.org" title="https://fedoraproject.org" target="_blank"><img src="/assets/images/icon/fedora.ico" width="16" height="16" style="vertical-align: -0.15em"></a> **Fedora** | `fedora` `fedora-archive` |
        | <a href="https://www.centos.org" title="https://www.centos.org" target="_blank"><img src="/assets/images/icon/centos.svg" width="16" height="16" style="vertical-align: -0.135em"></a> **CentOS** | `centos` `centos-stream` `centos-altarch` `centos-vault` |
        | <a href="https://rockylinux.org" title="https://rockylinux.org" target="_blank"><img src="/assets/images/icon/rocky-linux.svg" width="16" height="16" style="vertical-align: -0.2em"></a> **Rocky Linux** | `rocky` |
        | <a href="https://almalinux.org" title="https://almalinux.org" target="_blank"><img src="/assets/images/icon/almalinux.svg" width="16" height="16" style="vertical-align: -0.15em"></a> **AlmaLinux** | `almalinux` `almalinux-vault` |
        | <a href="https://www.oracle.com/linux" title="https://www.oracle.com/linux" target="_blank"><img src="/assets/images/icon/oracle-linux.png" width="16" height="16" style="vertical-align: -0.25em"></a> **Oracle Linux** | `centos-stream` |
        | <a href="https://www.openeuler.org/zh" title="https://www.openeuler.org/zh" target="_blank"><img src="/assets/images/icon/openeuler.ico" width="16" height="16" style="vertical-align: -0.2em"></a> **openEuler** | `openeuler` |
        | <a href="https://www.opencloudos.org" title="https://www.opencloudos.org" target="_blank"><img src="/assets/images/icon/opencloudos.png" width="16" height="16" style="vertical-align: -0.25em"></a> **OpenCloudOS** | `opencloudos` |
        | <a href="https://www.openkylin.top" title="https://www.openkylin.top" target="_blank"><img src="/assets/images/icon/openkylin.ico" width="16" height="16" style="vertical-align: -0.25em"></a> **openKylin** | `openkylin` |
        | <a href="https://openanolis.cn" title="https://openanolis.cn" target="_blank"><img src="/assets/images/icon/anolis.png" width="16" height="16" style="vertical-align: -0.1em"></a> **Anolis OS** | `anolis` |
        | <a href="https://www.opensuse.org" title="https://www.opensuse.org" target="_blank"><img src="/assets/images/icon/opensuse.svg" width="16" height="16"></a> **openSUSE** | `opensuse` |
        | <a href="https://archlinux.org" title="https://archlinux.org" target="_blank"><img src="/assets/images/icon/arch-linux.ico" width="16" height="16" style="vertical-align: -0.15em"></a> **Arch Linux** | `archlinux` `archlinuxarm` |
        | <a href="https://manjaro.org" title="https://manjaro.org" target="_blank"><img src="/assets/images/icon/manjaro.svg" width="16" height="16" style="vertical-align: -0.2em"></a> **Manjaro** | `manjaro` |
        | <a href="https://www.alpinelinux.org" title="https://www.alpinelinux.org" target="_blank"><img src="/assets/images/icon/alpine.png" width="16" height="16" style="vertical-align: -0.15em"></a> **Alpine Linux** | `alpine` |
        | <a href="https://www.gentoo.org" title="https://www.gentoo.org" target="_blank"><img src="/assets/images/icon/gentoo.svg" width="16" height="16" style="vertical-align: -0.2em"></a> **Gentoo** | `gentoo` `gentoo-portage` |
        | <a href="https://nixos.org" title="https://nixos.org" target="_blank"><img src="/assets/images/icon/nixos.svg" width="16" height="16" style="vertical-align: -0.15em"></a> **NixOS** | `nix-channels` |

    Example:

    ``` { .bash title="Use Aliyun mirror for Rocky Linux" }
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
      --source mirrors.aliyun.com \
      --branch rockylinux
    ```

    The repository directory name for Rocky Linux on Aliyun is [`rockylinux`](https://mirrors.aliyun.com/rockylinux), not the default `rocky`, but you can override the default rule with the command option.

    > Some systems configure multiple repos at once. See command options for details.

    > Since the repo path is appended to the mirror address, you can use multi-level paths, e.g., `--branch "linux/debian"` -> `https://mirrors.example.com/linux/debian`

- ### Switch EPEL repo only

    !!! info "EPEL (Extra Packages for Enterprise Linux) is an additional repo maintained by Fedora, mainly for Red Hat-based distributions except Fedora itself. Configuring EPEL is a common need and is recommended by default."

    Sometimes your desired mirror does not have EPEL. You can skip EPEL during the first run and then run:

    ``` bash
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) --only-epel
    ```

    For EPEL 7 (EOL), use the [`archive`](https://dl.fedoraproject.org/pub/archive/epel) repo. For overseas networks, use `--use-official-source-epel true` to use the official repo.

- ### Restore official mirrors

    If you accidentally deleted the backup of the official mirror, use this command to restore. This skips mirror selection.

    ``` bash
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) --use-official-source true
    ```
    > Some systems (e.g., `Arch Linux`) have no official mirror, so Aliyun will be used as a fallback.

- ### Usage examples for specific systems

    - #### About CentOS EOL

        The script adapts to EOL CentOS 7/8 and CentOS Stream 8.

        <div class="grid cards" markdown>

        -   __Mainland China__

            ---

            Use as normal; most Chinese mirrors sync [`CentOS Vault`](https://vault.centos.org).

        -   __International__

            ---

            Use `Tencent Cloud` or `Aliyun` mirrors, or use `--use-official-source true` for the official repo.

        </div>

        EPEL 7 is also EOL and is supported by the script.

    - #### Specify GNU/Linux Debian Security repo

        For maximum security, use the official repo due to mirror sync delays.

        ``` bash
        bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
          --source-security security.debian.org \
          --branch-security debian-security
        ```

    - #### Specify Debian-based codename

        Usually for switching system versions. Example:

        === "Upgrade GNU/Linux Debian to 13 "trixie""

            - Change version code

                ``` bash
                bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
                --codename trixie \
                --upgrade-software false
                ```

            - Disable the backports repository

                ``` bash
                sed -i '/backports/s/^/# /' /etc/apt/sources.list
                ```

            - Upgrade the system

                ``` bash
                apt-get update
                apt-get dist-upgrade
                ```

            - After the upgrade is complete and the system is rebooted, perform the following steps

                ``` bash
                # Clear the original software sources (back up any non-system software sources)
                sed -i '1,$d' /etc/apt/sources.list
                # Rerun the mirror switching script
                bash <(curl -sSL https://linuxmirrors.cn/main.sh)
                ```

        === "Switch GNU/Linux Debian to testing branch"

            ``` bash
            bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
            --codename testing \
            --upgrade-software false
            ```

        ``` { .bash .no-copy title="If the script can't set the codename, you can manually replace it after running" }
        sed -i "s/$(lsb_release -cs)/your-codename/g" /etc/apt/sources.list
        ```

    - #### Switch Ubuntu EOL version mirrors

        !!! info "EOL means End Of Life. Non-LTS Ubuntu versions are supported for only 9 months. Old versions are removed from the main repo and may require using the `Ubuntu Old Releases` repo."

        See the official [Wiki](https://wiki.ubuntu.com/Releases) for version support and check each mirror for `Ubuntu Old Releases` support.

        ``` bash
        bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
          --source mirrors.ustc.edu.cn \
          --branch ubuntu-old-releases
        ```

    - #### Arch Linux use Chinese community repo

        This script does not support this extra repo. For reference, use:

        ``` bash
        SOURCE="https://mirrors.aliyun.com/archlinuxcn"
        grep -q "\[archlinuxcn\]" /etc/pacman.conf || echo -e "[archlinuxcn]\nServer = ${SOURCE}/\$arch" >>/etc/pacman.conf
        ```

- ### Unattended (automation)

    To run without interaction, use at least the following options. Recommended for experienced users.

    ``` { .bash .no-copy title="Example Command" }
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) \
      --source mirror.example.com \
      --protocol http \
      --use-intranet-source false \
      --install-epel true \
      --backup true \
      --upgrade-software false \
      --clean-cache false \
      --ignore-backup-tips
    ```
    > If you get an "invalid option" error, check the option validity and whitespace encoding. Each option is written on a separate line for readability.

- ### Pure mode

    This feature is introduced to facilitate the use of developers and operation and maintenance personnel. After it is enabled, the script content output will be simplified. It is recommended to use it with other command options without interaction.

    ``` bash
    bash <(curl -sSL https://linuxmirrors.cn/main.sh) --pure-mode
    ```

    !!! tip "Scrolling command logs may have unpredictable display issues, but no problems have been found so far."

---

## Customizing the Script

If you are a developer of another project and want to create a custom script based on this project, refer to the following. Some maintainers of China education network mirrors have already done so.

1.  It is not recommended to modify the core logic. Keep in sync with the upstream source code. The script execution order is controlled by the `main` function and is clear.
2.  You can simply remove irrelevant content, e.g., clear the mirror list arrays `mirror_list_(default|edu|abroad|extranet|intranet)`, e.g., `mirror_list_default=()`
3.  To customize script output, modify the `run_start`, `run_end`, and `print_title` functions.
4.  To add custom shell content, see the execution order in `main`. Insert content directly or encapsulate in a function.
5.  To reduce script size, delete unnecessary content. Besides the mirror lists, you can remove some modules:
    1. Keep the original structure; empty out the function bodies if not needed.
    2. Remove unused OS repo content `gen_repo_files_xxx`, which takes up over 60% of the script.
    3. Remove unused feature modules, e.g., `handle_command_options`, `backup_original_mirrors`, `upgrade_software`.
6.  Main configuration is controlled by unified variables, as are command options. These global variables are all uppercase and use underscores. See the table below. Declare them at the top of the script (reserved comment area) for quick customization.

| Variable | Meaning | Value Type |
| :-: | :-: | :-: |
| `SOURCE` | Specify mirror address (domain or IP) | `address` |
| `SOURCE_EPEL` | Specify EPEL repo address (domain or IP) | `address` |
| `SOURCE_SECURITY` | Specify Debian/Ubuntu security repo address (domain or IP) | `address` |
| `SOURCE_VAULT` | Specify CentOS/AlmaLinux vault repo address (domain or IP) | `address` |
| `SOURCE_PORTAGE` | Specify Gentoo portage repo address (domain or IP) | `address` |
| `SOURCE_BASE_SYSTEM` | Specify Linux Mint/Raspberry Pi OS base system repo address (domain or IP) | `address` |
| `SOURCE_BRANCH` | Specify mirror repo (path) | `repo name` |
| `SOURCE_EPEL_BRANCH` | Specify EPEL repo (path) | `repo name` |
| `SOURCE_SECURITY_BRANCH` | Specify Debian security repo (path) | `repo name` |
| `SOURCE_VAULT_BRANCH` | Specify CentOS/AlmaLinux vault repo (path) | `repo name` |
| `SOURCE_PORTAGE_BRANCH` | Specify Gentoo portage repo (path) | `repo name` |
| `SOURCE_BASE_SYSTEM_BRANCH` | Specify Linux Mint/Raspberry Pi OS base system repo (path) | `repo name` |
| `DEBIAN_CODENAME` | Specify Debian/openKylin codename | `codename` |
| `USE_INTRANET_SOURCE` | Prefer intranet mirror address | `true` or `false` |
| `USE_OFFICIAL_SOURCE` | Use official mirror of target OS | `true` or `false` |
| `USE_OFFICIAL_SOURCE_EPEL` | Use official EPEL repo | `true` or `false` |
| `WEB_PROTOCOL` | Specify WEB protocol | `http` or `https` |
| `INSTALL_EPEL` | Install EPEL repository | `true` or `false` |
| `ONLY_EPEL` | Only switch EPEL repo | `true` or `false` |
| `BACKUP` | Backup original mirrors | `true` or `false` |
| `IGNORE_BACKUP_TIPS` | Ignore backup overwrite prompt | `true` or `false` |
| `UPGRADE_SOFTWARE` | Upgrade packages | `true` or `false` |
| `CLEAN_CACHE` | Clean cache after upgrade | `true` or `false` |
| `CLEAN_SCREEN` | Clear screen before running | `true` or `false` |
| `PRINT_DIFF` | Print diff before and after modification | `true` or `false` |
| `PURE_MODE` | Pure mode, minimal output | `true` or `false` |

> Some variables have defaults. Unused variables do not need to be declared as empty strings. If a configuration is missing, interaction may occur.
