> For the complete documentation index, see [llms.txt](https://cgo.gitbook.io/my-it-blog/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cgo.gitbook.io/my-it-blog/linux-1/linux-chang-yong-ming-ling.md).

# Linux常用命令

chgrp：更改文件属组\
语法：\
chgrp \[-R] 属组名 文件名\
参数选项： -R：递归更改文件属组，就是在更改某个目录文件的属组时，如果加上-R的参数，那么该目录下的所有文件的属组都会更改。\
\
chown：更改文件属主，也可以同时更改文件属组\
语法：\
chown \[–R] 属主名 文件名\
chown \[-R] 属主名：属组名 文件名\
\
chmod：更改文件9个属性\
Linux文件属性有两种设置方法，一种是数字，一种是符号。\
Linux文件的基本权限就有九个，分别是owner/group/others三种身份各有自己的read/write/execute权限。 例子：\
chmod 777 test1\
chmod u=rwx,g=rx,o=r test1\
chmod a-x test1


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