Is a file in writting
 

Hi.

I need to know if some user is writing a file.
Is there any command to know this.

Thanks.

Stephane

One possibility would be with the lsof command. It lists open files. Be warned, you will get lots of output. Piping it into grep or to a text file would be advisable :)

EDIT: lsof is a system command. So you'll likely need to be root to execute it...

The ps command lists all running processes, by user, including the path to applications and files they may be using. Examples of commands: ps aux, ps --User <username>. See the man pages for more info on how to use ps.