# Axel 用法说明

axel 支持多线程下载和断点续传。断点续传是默认开启的功能，不需要通过参数来使能。

```bash
# 普通用法
axel -n <x> <download url>

# 其他参数说明
axel -h
Usage: axel [options] url1 [url2] [url...]

    --max-speed=x           -s x    Specify maximum speed (bytes per second)
    --num-connections=x     -n x    Specify maximum number of connections
    --max-redirect=x                Specify maximum number of redirections
    --output=f              -o f    Specify local output file
    --search[=n]            -S[n]   Search for mirrors and download from n servers
    --ipv4                  -4      Use the IPv4 protocol
    --ipv6                  -6      Use the IPv6 protocol
    --header=x              -H x    Add HTTP header string
    --user-agent=x          -U x    Set user agent
    --no-proxy              -N      Just don't use any proxy server
    --insecure              -k      Don't verify the SSL certificate
    --no-clobber            -c      Skip download if file already exists
    --quiet                 -q      Leave stdout alone
    --verbose               -v      More status information
    --alternate             -a      Alternate progress indicator
    --help                  -h      This information
    --timeout=x             -T x    Set I/O and connection timeout
    --version               -V      Version information

# 示例
axle -n 20 -o /home/user/Downloads https://example.com/example.zip
axle -n 10 -o /home/user/Downloads/download.zip https://example.com/example.zip

# -s 参数有时会导致 axle 程序卡死
axle -n 20 -s 1024 -o /home/user/Downloads https://example.com/example.zip
```