Possible Duplicate:
How to check how a long a program has been running?
I am interested in doing this purely using bash.
Possible Duplicate:
How to check how a long a program has been running?
I am interested in doing this purely using bash.
ps
can fit your needs:
ps -eo pid,command,etime
To get information for a specific process:
ps -o command,etime -p PID