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Top Forums Shell Programming and Scripting awk to insert line previous to a pattern? Post 302798567 by Drenhead on Wednesday 24th of April 2013 05:51:55 PM
Old 04-24-2013
awk to insert line previous to a pattern?

I have a very long line with certain patters embedded in there. I need to be able to read that line, and when it encounters that pattern, create a new line.

I want the pattern to be the beginning of the new line.

I thought sed or awk could do this, but everything I try in sed gives me a "sed garbled" message.

Any thoughts?
 

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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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