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Get some data from a list, using grep or sed

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# 1  
Old 02-11-2015
Get some data from a list, using grep or sed
Hi, my dear friends,

I have to use very frequently the command of qsum to check the free node for job submitting. However, qsum always shows all the nodes regardless of their status.

Code:
 occupied
        p1 100000mb  48:00:00   1
       p72  51200mb     --      1
       p73  51200mb     --      1   1
       p74  73800mb  48:00:00   1
       p75  73800mb  96:00:00   1
       p76  73800mb  96:00:00   1   1
       p77  73800mb  48:00:00   1
       p78  73800mb  48:00:00   1
       p79  73800mb  96:00:00   1
       p80  73800mb     --      1
       p81  73810mb     --      1
       p89  51200mb     --      1   1
       p90  51200mb     --      1
       p91  73800mb  48:00:00   1
       p92  73800mb  48:00:00   1
       p93  73800mb  48:00:00   1
       p94  73800mb  96:00:00   1
       p95  73800mb  48:00:00   1
       p96  73800mb  48:00:00   1
       p97  73800mb  96:00:00   1
       p98  73800mb  48:00:00   1
      p104  73800mb  48:00:00   1   1

  free
      p105  73800mb  48:00:00
      p106 150000mb  48:00:00
      p107 150000mb  48:00:00

g-queues : for jobs that don't do much IO

  occupied
        g3  51200mb  48:00:00   1   1
        g4  51200mb  48:00:00   1
        g5  51200mb  48:00:00   1
        g6  51200mb  48:00:00   1   1
        g7  51200mb  48:00:00   1
        g8  51200mb  48:00:00   1
       g10  51200mb  48:00:00   1   1
       g11  51200mb  48:00:00   1   1
       g41  20000mb  96:00:00   1   4
       g42  20000mb  96:00:00   1
       g43  20000mb  96:00:00   1   4
       g44  20000mb  96:00:00   1   4
       g45  20000mb  48:00:00   1
       g46  20000mb  48:00:00   1   1
       g47  20000mb  48:00:00   1   7
       g48  20000mb  48:00:00   1
       g58  40960mb  48:00:00   1   7
       g60  40960mb  48:00:00   1   1
       g61  40960mb  48:00:00   1
       g62  40960mb  96:00:00   1
       g64  40960mb  48:00:00   1   1
       g66  40960mb  48:00:00   1
       g67  40960mb  48:00:00   1
       g68  40960mb  96:00:00   1   3

Is there a way to get only the free nodes listed from the command qsum?
For instance, by using qsum | grep ??? or qsum | awk ??? to get the free nodes information.

I thank you very much for your kind help!
It will save me a lot of attention to focus on the job.

zhen
Last edited by joeyg; 02-11-2015 at 03:08 PM.. Reason: Robin added ICODE tags; fixed title
# 2  
Old 02-11-2015
Pipe it through
Code:
qsum | sed -n '/free/,/^$/p'
  free
      p105  73800mb  48:00:00
      p106 150000mb  48:00:00
      p107 150000mb  48:00:00

assuming above is the output of qsum...
This User Gave Thanks to RudiC For This Post:
liuzhencc
# 3  
Old 02-11-2015
Hi RudiC, that is exactly what I'm expected the print on the screen. Million thanks!
# 4  
Old 02-12-2015
Code:
qsum | awk -v RS='' ' /free/ '

# 5  
Old 02-12-2015
Hi, anbu! This also did the trick! Great! thanks a lot!
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