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                ` `在運行shell腳本時,我們有時候需要獲取shell的絕對路徑,很多是使用`dirname $0`,但是這不一定能能夠獲得絕對路徑,這取決于你當前終端所在的路徑。 ` `比如我一下路徑中run文件的路徑: ![](https://img.kancloud.cn/5f/b8/5fb82fd0e6d656dd589b0cda3d2baf32_358x239.png) ` `如果我們需要獲得完全的絕對路徑,可以使用`readlink`命令, ``` 用法:readlink [選項]... 文件... 輸出符號鏈接值或權威文件名。 -f, --canonicalize 遞歸跟隨給出文件名的所有符號鏈接以標準化, 除最后一個外所有組件必須存在 -e, --canonicalize-existing 遞歸跟隨給出文件名的所有符號鏈接以標準化, 所有組件都必須存在 -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 顯示此幫助信息并退出 --version 顯示版本信息并退出 ``` ![](https://img.kancloud.cn/51/5e/515e0b3fe9f7177c10a12d54959f13cd_359x240.png) ` `在腳本中可以使這樣: ```[shell] #!/bin/bash dir=`dirname $0;pwd` dir1=`pwd` dir2=$(readlink -f $0) echo $dir2 ```
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