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Need a word which just comes next to after grep of a specific word

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# 1  
Old 12-16-2013
Need a word which just comes next to after grep of a specific word
Hi,

Below is an example :
Code:
ST1 PREF: int1 AVAIL: int2
ST2 PREF :int1 AVAIL: int2


I need int1 to come in preferred variable while programming and int2 in available variable

Please help me doing so

Best regards,
Vishal
# 2  
Old 12-16-2013
Quote:
Originally Posted by Vishal_dba
Hi,

Below is an example :
Code:
ST1 PREF: int1 AVAIL: int2
ST2 PREF: int1 AVAIL: int2

I need int1 to come in preferred variable while programming and int2 in available variable

Please help me doing so

Best regards,
Vishal
Like this ?

Code:
$ pref=$(awk '/PREF/{print $3;exit}' file)

$ avail=$(awk '/AVAIL/{print $NF;exit}' file)

Last edited by Akshay Hegde; 12-16-2013 at 07:42 AM.. Reason: confused
# 3  
Old 12-16-2013
What have you tried so far?

The grep will get you the whole line that matches, so then you just read the part you need from that line.



Robin
# 4  
Old 12-16-2013
@vishal please be specific about your requirement

Grep you can try something like this

Code:
$ pref=$(grep -Po -m1 '(?<=PREF:).*(?=AVAIL:)' file)
$ echo $pref
int1 

$ avail=$(grep -Po -m1 '(?<=AVAIL:).*' file)
$ echo $avail
int2

This User Gave Thanks to Akshay Hegde For This Post:
RavinderSingh13
# 5  
Old 12-16-2013
Thank you Akshay for the great commands. Could you please explain the same please, will be grateful to you.


Thanks,
R. Singh
# 6  
Old 12-16-2013
Quote:
Originally Posted by RavinderSingh13
Thank you Akshay for the great commands. Could you please explain the same please, will be grateful to you.


Thanks,
R. Singh

Code:
grep -Po -m1 '(?<=PREF:).*(?=AVAIL:)'

P---> Interprets as regular perl expression

o---> Printout only what is matched

m 1 --> Max count 1, after match stop reading file

( --> start grouping

?<=PRES: --> positive look behind, but don't match PRES:

) --> end grouping

.* --> anything after positive look behind to negative look behind will be part of match

( --> start grouping

?=AVAIL: --> negative look behind

) --> end grouping

Hope its fine.
This User Gave Thanks to Akshay Hegde For This Post:
rbatte1
# 7  
Old 12-16-2013
Thanks Akshay!


However,this is not working in aix machine

Code:
 pref=$(grep -Po -m1 '(?<=PREF:).*(?=AVAIL:)' /tmp/test.out)
grep: illegal option -- P
grep: illegal option -- o
grep: illegal option -- m
grep: illegal option -- 1


Please help


Best regards,
Vishal
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