UNIX for Dummies Questions & Answers

Hi,

Can someone advise what "generic" command can I use to show statistics of a process or a running script/process?

For example, I want to know how many hours/minutes it's taken to run or has been running, how much CPU it used and how much memory it used or uses.

I want to be able to do run the command for both Solaris and Linux.

I found several suggestion on how long a process has been running by checking the timestamp in /proc and doing a calculation with the current time, but it does not show how to do time arithmetic

Any advice much appreciated. Thanks.

Have you looked at the manual page for ps? That gives running process information, but obviously the end time is not recorded.

Alternatively, you could write your code to do some logging for you, for example, you can write a message to the system log with the logger command on most versions of unix. This is date/time stamped, so you can review it later.



I hope that this helps.


Robin
Liverpool/Blackburn
UK

Posix style is best portable:

Code:

ps -eo pid,stime,etime,time,rss,vsz,user,args

If you know the pid and the user and the args (in this case $$ - the pid of the shell):

Code:

ps -p $$ -o etime,time,rss,vsz,comm

Without header:

Code:

ps -p $$ -o etime= -o time= -o rss= -o vsz= -o comm=