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Go to particular line and add a new line

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# 1  
Old 11-23-2012
Go to particular line and add a new line
hi All,

My file has 3 lines as below:

hi
hello
how are you

My requirement is to go 2nd line and append a new line abcdef so that output looks like:

hi
hello
abcdef
how are you

My file doesn't always have 3 lines,it might differ from each execution.
Can someone please help me in this?
# 2  
Old 11-23-2012
Code:
$ nawk 'NR==2{$0=$0"\nTEST"}1' input.txt
hi
hello
TEST
how are you

This User Gave Thanks to itkamaraj For This Post:
gouthamimony
# 3  
Old 11-23-2012
thanks for the quick response..Can i do this using UTL_FILE package?
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