File Permission

[Amdy_Sufiyan]

what if user initially didn't give rwx permission to himself.

[Bill Hassell · Accepted solution]

The simple answer is to use chmod. However, missing from your question is how the user was able to create a file without rwx permissions. When a user creates a file using vi or cp or touch or even file redirection, the setting for umask defines the initial mode for the file. In a new system where the (very bad) default for umask is 00, files will be created as -rw-rw-rw. NOTE: files should never be set to rwx UNLESS the file is a script (ksh, sh, perl, awk, etc). You do not want the x bit set on simple data files. If umask is 022, then permissions will default to -rw-r--r--

If the user does not own the file, then the permissions (chmod) cannot be changed. Only the owner can modify the permissions.

[Amdy_Sufiyan]

Thanx....
:)