users and there processes

magnia

I am trying to write a script to list all users and their processes. I cant seem to find out how to link the PID to the user. For example if i run ps -a I get a nice list of all the processes running and their PID, but no information about which user is running them. I need the users real name not login in name so Joe Bloggs instead of joe.bloggs

The output should look similar to this.


Joe Bloggs
PID TTY TIME CMD
31799 pts/3 00:00:00 vim
31866 pts/3 00:00:00 vim
2495 pts/7 00:00:00 vim
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps

Henry Hill
PID TTY TIME CMD
8368 pts/0 00:00:00 vim
9544 pts/2 00:00:00 ps

anyone any ideas

oscarBravo

Have you tried "man ps"?

magnia

yes, u any ideas. ive tried all the options that the man ps showed me. but i still dont know how i am going to get the username to appear like Joe Bloggs instead joe.bloggs

oscarBravo

Users' real names are in /etc/passwd.

magnia

hmmm so could i do something like ps -aux|grep /etc/passwd

liamo

Off the top of my head :
1. cat the contents of /etc/passwd through awk to retrieve the username and comment (usually containing the real name) fields.
2. iterate through the result of 1
3. for each iteration of 2, count the processes for each user by piping a filtered list of processes (ps -u) into wc -l
4. if the result of 3 is > 1 then output the real name and the result of ps -u <username>

Probably about 10 lines of script to accomplish the above.
The actual scripting I leave to you

Regards,

Liam

deadfingers

Try prstat

magnia

yup catted the file then piped it and mess around another bit and finally got what i was looking for wooh