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Old 03-28-2015, 03:25 AM   #1
apss_evaluator
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Registered: Mar 2012
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using awk print


Hi Linux Guru's

need some a little help regarding on the jboss command that will validate. The command should only echo either "jboss7" or "jboss4"


however in our jboss7 we got also jboss7modules running and it should not be there from the output

[pogi.ako@server2 ~]$ rpm -qa | grep jboss | grep -v config | awk -F'-' '{print $3}'
jboss7
jbossmodules


using with |tail -1 | head -1
[lemuel.luna@server2 ~]$ rpm -qa | grep jboss | grep -v config | awk -F'-' '{print $3}' |tail -1 | head -1
jbossmodules


but from other servers I see it has different approach

[pogi.ako@server1 bin]$ rpm -qa | grep jboss | grep -v config | awk -F'-' '{print $3}'
jbossmodules
jboss7


[pogi.ako@server1 bin]$ rpm -qa | grep jboss | grep -v config | awk -F'-' '{print $3}' |tail -1 | head -1
jboss7


I'm trying to achieve here on on not to include jbossmodules from the output
 
Old 03-28-2015, 03:41 AM   #2
apss_evaluator
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nevermind guys, this is now fixed
 
Old 03-28-2015, 04:10 AM   #3
grail
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Even if you solve yourself, it is customary to supply the solution so others may benefit

I would add that there would be no reason to use grep at all if using awk and that if you simply include that there could be a number you would not get the modules output:
Code:
rpm -qa | awk -F- '/jboss[0-9]/{print $3}'
Above is untested but you should get the idea.
 
  


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