Why can't one change the permissions of links which are rwxrwxrwx ?

Solution Verified - Updated -

Issue

  • The permissions of /bin/csh can't be changed. See the following.
[root@test ~]# which csh
/bin/csh
[root@test ~]# ls -l /bin/csh
lrwxrwxrwx 1 root root 4 Jul 28  2014 /bin/csh -> tcsh
[root@test ~]# ls -l /bin/tcsh 
-rwxr-xr-x 1 root root 383016 Dec 18  2012 /bin/tcsh
[root@test ~]# chmod 755 /bin/csh
[root@test ~]# ll /bin/csh
lrwxrwxrwx 1 root root 4 Jul 28  2014 /bin/csh -> tcsh
  • Why can't one change the permissions of links?

Environment

  • Red Hat Enterprise Linux 5/6/7

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