asked on

hpux ksh add line after pattern

Hi Experts,

In a text a line needs appended when a pattern is found.
The pattern is in format xxx-yyy-zzz and is passed as a variable.

I found this line...
perl -lne 'print $_;print "Text To Insert" if(/PATTERN/);' inputfile > outputfile
That works fine but not with a variable.

my script looks like this:

#/bin/ksh
job=XXX-YYY-ZZZ
echo $job
input="path/to/input"
output="path/to/output"
perl -lne 'print $_;print "TEXT TO INSERT" if(/$job/);' $input > $output

Open in new window

The problem seems to be with the dashes...

If input file is this:
blahblahblah
blahblahblah
blah#XXX-YYY-ZZZ.blah
blahblah

Output is like this:
blahblahblah
TEXT TO INSERT
blahblahblah
TEXT TO INSERT
blah#XXX-YYY-ZZZ.blah
TEXT TO INSERT
blahblah
TEXT TO INSERT

It inserts at every line so it seems...
Any clue?

Thanks!

farzanj

You are using korn shell not perl so you need to evaluate the KSH variable

perl -lne 'print $_;print "TEXT TO INSERT" if(/eval $job/);' $input > $output

Open in new window

Watnog

ASKER

Thanks, No luck however.
The output is identical to input; nothing is inserted...

script:

#!/bin/ksh
job=XXX-YYY-ZZZ
echo $job
input="a"
output="b"
perl -lne 'print $_;print "TEXT TO INSERT" if(/eval $job/);' $input > $output

Open in new window

input:
blahblahblah
blahblahblah
blah#XXX-YYY-ZZZ.blah
blahblah

output:
blahblahblah
blahblahblah
blah#XXX-YYY-ZZZ.blah
blahblah

ASKER CERTIFIED SOLUTION

farzanj

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

namethis

#/bin/ksh
export job=XXX-YYY-ZZZ
echo $job
input="path/to/input"
output="path/to/output"
perl -lne 'print $_;print "TEXT TO INSERT" if(/$ENV{job}/);' $input > $output

Open in new window

Watnog

ASKER

I tried a whole lot of things, but apparently overlooked the most obvious.
Thank you very much.