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Is there any way to find sleeping processes in Ubuntu?

I can see top can list out number of sleeping processes, but I want them to be listed with their name.

Are there any commands for that?

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3 Answers 3

ps -e S 

will show you sleeping processes.

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Uhm... no. It will show all processes by providing the -e option. –  gertvdijk Mar 31 at 12:48
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You could grab the information from top, which can be run in batch mode (-b).

top -bn1 | awk 'NR > 7 && $8 ~ /S|D/ { print $12 }'
  • -n1 top runs only once and exits.
  • NR > 7 skips header.
  • $8 ~ /S|D/ selects programs which are in state D or S.

Possible states are, from top(1):

      'D' = uninterruptible sleep
      'R' = running
      'S' = sleeping
      'T' = traced or stopped
      'Z' = zombie
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It chops off the first character of the process name; you need to put cut -c40-41,62- instead of cut -c40-41,63- –  user76204 Sep 15 '12 at 16:49
    
It is actually 63 here so using specific column numbers is unreliable. I switched the parsing over to awk. –  Thor Sep 15 '12 at 17:12
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Try this:

ps o state,command axh | grep "^[SD]" | cut -b 3-

for listing commands of processes with an interruptable and uninterruptable sleep state.

  • ps outputting only state and commands of all processes (ax) and h removes the header line.
  • grep filters processes other than the two sleep states
  • cut is used to remove the state output again.
  • Optionally replace command with ucmd if you don't need the full name including all arguments.

This is probably suboptimal scripting here, but I couldn't find a quick way to have ps filtered for a specific state.

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@Thor Thanks for you now removed comment. I've updated my answer. –  gertvdijk Sep 15 '12 at 15:30
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