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Top Forums Shell Programming and Scripting how do I break line in a file when a pattern is matched ? Post 302568943 by ihussain on Friday 28th of October 2011 06:29:19 PM
Old 10-28-2011
That was awesome !!!

Thanks a lot @vgersh99 !!!

---------- Post updated at 03:29 PM ---------- Previous update was at 03:19 PM ----------

I used awk because the system is very minimal and requesting nawk would take 2-3 days. The file contains numerous records and this is the second line which gotta be split into second and third line. I am trying to achieve like below where Intermediate_2 is the filename containing records:-

sed '2p' Intermediate_2 | awk '{gsub("ST",RS "&")}1'
OR
sed '/GS/p' Intermediate_2 | awk '{gsub("ST",RS "&")}1'

As you would know, placing this in my script produces duplicates of the split-up lines. If I use above sed(s) with -n option, then only the split lines are printed and the other contents goes away.

Is there a workaround to this ?
 

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GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
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