(uiserver):u61210220:~/perlmonks/scripts$ su
(uiserver):u61210220:~/perlmonks/scripts$ man su
(uiserver):u61210220:~/perlmonks/scripts$ sudo anything
-bash: sudo: command not found
(uiserver):u61210220:~/perlmonks/scripts
(uiserver):u61210220:~$ chmod +w /etc/ssh/sshd_config
chmod: changing permissions of ‘/etc/ssh/sshd_config’: Read-only file system$