7 comment

1. i want to find the process execution time in LINUX???

   1. time(command) | grep user|cut -f 2

      1. My time command writes to stderr instead of stdout, so I had to use (time command) 2>&1 | grep user

2. I recommend using `htop’ instead of top to monitor processes. It’s much friendlier and easy to use, and allows you to do more. (It’s colorized too!)

   It’s in the ubuntu repositories, I imagine you can install it easily for debian as well.

3. I prefer using atop.. which gives all the option network activity, disk activity and many more you can check in the man page of it

   I dont know abt redhat and fedora but its there in ubuntu and debian repo

4. atop and htop will never work on fedora

5. what about this command:

   ps axu | awk '{print $2, $3, $4, $11}' | head -1 && ps axu | awk '{print $2, $3, $4, $11}' | sort -k3 -nr |head -5

   The result is here

   PID %CPU %MEM COMMAND
   2222 3.2 3.8 /usr/lib/firefox/firefox
   1937 0.2 1.5 /home/sorin/.dropbox-dist/dropbox
   1073 3.8 1.0 /usr/bin/X
   2407 0.2 0.9 pidgin
   4105 1.5 0.8 /usr/lib/firefox/plugin-container
   

   I see the 5 processes which consume most of the memory.
   If I want to see the CPU, then I sort after second column => sort -k2

   ps axu | awk '{print $2, $3, $4, $11}' | head -1 && ps axu | awk '{print $2, $3, $4, $11}' | sort -k2 -nr |head -5

   outputs:

   PID %CPU %MEM COMMAND
   3448 16.9 0.2 rsync
   1073 3.7 1.0 /usr/bin/X
   2222 3.2 3.7 /usr/lib/firefox/firefox
   830 2.5 0.5 /sbin/mount.ntfs
   4105 1.4 0.6 /usr/lib/firefox/plugin-container
   

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