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Grep out specific word and only that word


 
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# 1  
Grep out specific word and only that word

ok, so this is proving to be kind of difficult even though it should not be.

say for instance I want to grep out ONLY the word fkafal from the below output, how do I do it?

Code:
echo ajfjf fjfjf iafjga fkafal foeref afoafahfia | grep -w "fkafal"

If i run the above command, i get back all the other words, which i dont want. all I want returned back is the word "fkafal". Is this possible?

Thanks
# 2  
try with
Code:
grep -o "fkafal" 
(or) grep -ow "fkafal"

This User Gave Thanks to michaelrozar17 For This Post:
# 3  
Try:
Code:
perl -lne 'print/(fkafal)/'

or

Code:
sed -n 's/.*\(fkafal\).*/\1/p'

This User Gave Thanks to cabrao For This Post:
# 4  
Quote:
Originally Posted by michaelrozar17
try with
Code:
grep -o "fkafal" 
(or) grep -ow "fkafal"



how about in a case like the below:

Code:
HOST-RESOURCES-MIB::hrSWRunPath.18121 = STRING: "/usr/local/lib/sa/sadc" ---- HOST-RESOURCES-MIB::hrSWRunPath.18144 = STRING: "/usr/vendor/jdk15/bin/java" ---- HOST-RESOURCES-MIB::hrSWRunPath.20634 = STRING: "/usr/local/bin/ntpd" ---- HOST-RESOURCES-MIB::hrSWRunPath.21659 = STRING: "//usr/sbin/asterisk" ---- HOST-RESOURCES-MIB::hrSWRunPath.29595 = STRING: "/usr/bin/perl"

in the above, the fields are separated by "----".

what if I want to grep out just the field that has the entire string HOST-RESOURCES-MIB::hrSWRunPath.18144 = STRING: "/usr/vendor/jdk15/bin/java in it?

reason why i'm asking is that, the value /usr/vendor/jdk15/bin/java is not always known. what is known is the "HOST-RESOURCES-MIB::hrSWRunPath.18144". So i run into problems trying to grab the entire string associated with that before the ---- delimiter.

Last edited by SkySmart; 12-02-2010 at 01:05 PM..
# 5  
you could try ..
Code:
grep -o ' H.*18144[^-]*' inputfile
 HOST-RESOURCES-MIB::hrSWRunPath.18144 = STRING: "/usr/vendor/jdk15/bin/java" # Only outputs per your previous post

or if not specific try with awk
Code:
awk -F "---- " '{print $2}' inputfile # Change $2 to $3 or $1 etc and try


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