Learn Linux Shell Scripting - Fundamentals of Bash 4.4

chown, chgrp

After the little sudo detour, we can get back to file permissions: how do we change the ownership of files? Let's start with changing the group using chgrp. The syntax is as follows: chgrp <groupname> <filename>:

reader@ubuntu:~$ ls -ltotal 12-rw-rw-r-- 1 reader reader   69 Jul 14 13:18 nanofile.txtdrwxrwxr-x 2 reader reader 4096 Aug  4 16:16 testdir-rwxr-xr-- 1 reader reader    0 Aug  4 13:44 testfiledrwxrwx--- 2 reader reader 4096 Aug  4 16:18 umaskdir-rw-rw---- 1 reader reader    0 Aug  4 16:18 umaskfilereader@ubuntu:~$ chgrp games umaskfile chgrp: changing group of 'umaskfile': Operation not permittedreader@ubuntu:~$ sudo chgrp games umaskfile reader@ubuntu:~$ ls -ltotal 12-rw-rw-r-- 1 reader reader   69 Jul 14 13:18 nanofile.txtdrwxrwxr-x ...