Shell ps command under Ubuntu -

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i have question regarding shell scripts. trying specific possible. so, have write monitoring shell script in have write in file users running vi command more, 1 minute. don't have idea approach, except should use ps command. have this:

ps -ewo "%t %u %c %g" | grep '\< vi >'

with times , users run vi command. problem don't know how parse result of command. can help, please? answers appreciated. thanks

i use awk:

ps eo user,etime,pid,args --no-heading -c vi | awk '{min=int(substr($2,0,2)); printf "minutes=%s pid=%d\n", min, $3; }'

note, dont have grep "vi", can use "ps -c procname".


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