* chown, chmod, chgrp, chattr, id 2775 vs 775

 

CHMOD CHOWN

https://stackoverflow.com/questions/35061499/how-to-display-column-headers-for-ls-l-command-in-unix-linux

https://phoenixnap.com/kb/linux-file-permissions

https://opensource.com/article/19/8/linux-chmod-command

[root@az-cvs-li-re-001 rage]# chmod ugo+rwx test

[root@az-cvs-li-re-001 rage]# ls -l|grep test

drwxrwxrwx   2 root root        6 Jun  1 09:53 test

[root@az-cvs-li-re-001 rage]# chmod u+rwx,g-rwx,o+rw-x test

[root@az-cvs-li-re-001 rage]# ls -l|grep test

drwx---rw-   2 root root        6 Jun  1 09:53 test

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https://phoenixnap.com/kb/linux-chown-command-with-examples

chown [OPTIONS] USER[:GROUP] FILE(s)

[OPTIONS] – the command can be used with or without additional options.

[USER] – the username or the numeric user ID of the new owner of a file.

[:] – use the colon when changing a group of a file.

[GROUP] – changing the group ownership of a file is optional.

FILE – the target file.

[rage@az-cvs-li-re-001 ~]$ ls -la test

total 4

drwx---rw-   2 rage root    6 Jun  1 09:53 .

drwx------. 36 rage rage 4096 Jun  1 09:53 ..

[rage@az-cvs-li-re-001 ~]$ chown :rage test

[rage@az-cvs-li-re-001 ~]$ ls -la test

total 4

drwx---rw-   2 rage rage    6 Jun  1 09:53 .

drwx------. 36 rage rage 4096 Jun  1 09:53 ..