#Bash 的 readlink 命令

readlink [OPTION]... FILE...

功能

获取符号链接的源文件路径。

类型

可执行文件（/usr/bin/readlink），属于 coreutils。

参数

OPTION 选项：
- -f, --canonicalize - 将路径规范化为绝对路径（realpath），路径的所有组成部分（除了最后一部分）都必须存在
- -e, --canonicalize-existing - 将路径规范化为绝对路径，路径的所有组成部分都必须存在
- -m, --canonicalize-missing - 将路径规范化为绝对路径，路径的所有组成部分都可以不存在
- -n, --no-newline - 不要输出尾随的分隔符
- -q, --quiet - 不打印错误信息
- -s, --silent - 不打印错误信息；默认
- -v, --verbose - 打印错误信息
- -z, --zero - 以空字符（\0）作为行的结尾，而不是换行符（\n）
- --help - 显示帮助
- --version - 显示版本
FILE - 文件列表，如果没有这个参数或指定为 -，则读取标准输入

#示例

$ touch 1.txt           # 创建普通文件
$ readlink 1.txt        # 查看普通文件 没有任何输出
$ readlink -v 1.txt     # 开启错误信息
readlink: 1.txt: Invalid argument
$ ln -s 1.txt 2.txt     # 创建软链接
$ readlink 2.txt        # 查看软链接
1.txt
$ readlink -f 2.txt     # 规范化为绝对路径
/home/primers/1.txt

#相关命令

命令	说明
ln	创建文件的链接（硬链接或符号链接）

#推荐阅读

#手册


READLINK(1)                      User Commands                     READLINK(1)

NAME
       readlink - print resolved symbolic links or canonical file names

SYNOPSIS
       readlink [OPTION]... FILE...

DESCRIPTION
       Note  realpath(1)  is the preferred command to use for canonicalization
       functionality.

       Print value of a symbolic link or canonical file name

       -f, --canonicalize
              canonicalize by following every symlink in  every  component  of
              the  given name recursively; all but the last component must ex‐
              ist

       -e, --canonicalize-existing
              canonicalize by following every symlink in  every  component  of
              the given name recursively, all components must exist

       -m, --canonicalize-missing
              canonicalize  by  following  every symlink in every component of
              the given name recursively, without requirements  on  components
              existence

       -n, --no-newline
              do not output the trailing delimiter

       -q, --quiet

       -s, --silent
              suppress most error messages (on by default)

       -v, --verbose
              report error messages

       -z, --zero
              end each output line with NUL, not newline

       --help display this help and exit

       --version
              output version information and exit

AUTHOR
       Written by Dmitry V. Levin.

REPORTING BUGS
       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2023  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       readlink(2), realpath(1), realpath(3)

       Full documentation <https://www.gnu.org/software/coreutils/readlink>
       or available locally via: info '(coreutils) readlink invocation'

GNU coreutils 9.4                 April 2024                       READLINK(1)

#Bash 的 readlink 命令

#示例

#相关命令

#推荐阅读

#手册

显示