root@talented:/home/deeps/testperms# echo baa > moo
root@talented:/home/deeps/testperms# cat moo
baa
root@talented:/home/deeps/testperms# ls -lsa
total 20
4 drwxr-xr-x 2 deeps deeps 4096 Mar 11 11:17 .
12 drwxr-xr-x 23 deeps deeps 12288 Mar 11 11:17 ..
4 -rw-r--r-- 1 root root 4 Mar 11 11:17 moo
root@talented:/home/deeps/testperms# exit
deeps@talented:~/testperms$ echo meow >> moo
-bash: moo: Permission denied
deeps@talented:~/testperms$ ls -lsa
total 20
4 drwxr-xr-x 2 deeps deeps 4096 Mar 11 11:17 .
12 drwxr-xr-x 23 deeps deeps 12288 Mar 11 11:17 ..
4 -rw-r--r-- 1 root root 4 Mar 11 11:17 moo
deeps@talented:~/testperms$ mv moo oom
deeps@talented:~/testperms$ ls -lsa
total 20
4 drwxr-xr-x 2 deeps deeps 4096 Mar 11 11:18 .
12 drwxr-xr-x 23 deeps deeps 12288 Mar 11 11:17 ..
4 -rw-r--r-- 1 root root 4 Mar 11 11:17 oom
deeps@talented:~/testperms$ rm oom
rm: remove write-protected regular file `oom'? y
deeps@talented:~/testperms$ ls -lsa
total 16
4 drwxr-xr-x 2 deeps deeps 4096 Mar 11 11:18 .
12 drwxr-xr-x 23 deeps deeps 12288 Mar 11 11:17 ..
deeps@talented:~/testperms$