Linux常用命令-45：chmod

2 years ago

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迷途小书童的Note

chmod 命令用来改变文件或目录的权限，只有文件的属主和超级用户才能执行这个命令。有两种设置模式，一种是采用权限字母和操作符；另一种是采用数字。

语法格式： chmod [参数] [文件]

常用参数：

# 给test.sh脚本加个执行的权限，a为针对所有用户。r为读，w为写，x为执行
chmod a+x test.sh

# 给文件夹test递归设置权限755，读权限为4，写为2，执行为1，加起来是7
chmod -R 755 test

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