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How to add a line in a file using perl script?

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# 1  
Old 05-07-2012
How to add a line in a file using perl script?
Hi all,

I want to search for a line in a file using perl script and add a line above that line.Can any one suggest me command or code to that using script.

Thanks BHarath
# 2  
Old 05-07-2012
You are excepting this one

Code:
perl -p -i -e 's/raj/rani/g' test2.txt

# 3  
Old 05-07-2012
Code:
 
perl -lane 'if (/pattern/) {print "newword\npattern"}else{print $_}' filename.txt

# 4  
Old 05-07-2012
Or:
Code:
# cat infile
asa
sasaa
asasa
oooo
eee
eee

Code:
#perl -pi -e 'print "new line\n" if (/^ooo/);' infile

Code:
#cat infile
asa
sasaa
asasa
new line
oooo
eee
eee

# 5  
Old 05-07-2012
Hi

Actually my intention is to search a line which have one keyword for ex:-SLAVE,after searching i want add one line above this line.

Ex:- SLAVE"";---statement
now in this file i want to search for this word slave and above this line i want to add new line

//nes line added
SLAVE"";---statement

I want a perl script to do all this.
# 6  
Old 05-07-2012
ok.. and what's the problem with the suggestions above ?

Code:
#perl -pi -e 'print "new line\n" if (/SLAVE/);' infile

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