One Linux command per day: chgrp

1. Introduction to Commands

The chgrp (change group) is used to set the owning group of each specified file to the specified value. If you use--reference, the owning group for each file is set to be the same as the specified reference file.

2. Usage

     chgrp  [options] ...　User group File ... Or:chgrp [options] ...--reference= reference file ...

3. Options

4. Example 1: Modify the owning group of LOG1 to DBA

0 1 0 April  :chgrp0  1 Root dba  0 April  : Log1

Example 2:-V options

chgrp -v  dba log1"log1" belongs to a group that has been reserved for DBA

Example 3:-r recursive modification

[Email protected] ~]#ls-LDdir1/drwxr-xr-x2Oracle DBA4096April -  -: -dir1/[[Email protected]~]#chgrp-Rv dba Dir1"Dir1/log1"The owning group has been reserved for DBA"dir1/log2"the owning group has changed to DBA"Dir1"The owning group has been reserved for DBA

Example 4: The owning group can be an ID

0 1 0 April  :chgrp00  1 0 April  : Log1

Example 5: Change the owning group of LOG2 to the same as Log1

0 1 0 April  :  log11 root dba  0 April   - :chgrp-  v--reference=log1 log2"  log2" belongs to a group that has been retained as root

One Linux command per day: chgrp