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Top Forums UNIX for Dummies Questions & Answers Output text from 1st paragraph in file w/ a specific string through last paragraph of file w/ string Post 302411881 by Corona688 on Friday 9th of April 2010 04:22:28 PM
Old 04-09-2010
First off you get a useless use of cat award.

What you want is a bit trickier than just grepping for something, since it means needing to store lines until you've processed the whole file... Does your system have bash or perl? I'd write a script.

Code:
#!/bin/bash

STRING="MARK"
MODE="start"

TMP=`mktemp`
exec 5>$TMP

while IFS="" read LINE
do
        case "$MODE" in
        start)
                if [[ "$LINE" =~ $STRING ]]
                then
                        MODE="mid"
                        echo "$LINE"
                fi
                ;;
        mid)    if [[ "$LINE" =~ $STRING ]]
                then
                        cat $TMP
                        echo $LINE
                        echo > $TMP
                        exec 5>$TMP
                else
                        echo "$LINE" >&5
                fi
                ;;
        esac
        :
done <<EOF
a b
MARK
asdf1
asdf2
MARK
asdf3
asdf4
MARK
qwerty5
EOF

rm -f $TMP

To pipe stdin through it instead of the here-document, simply delete everything from <<EOF to EOF.
 

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GIT-STRIPSPACE(1)						    Git Manual							 GIT-STRIPSPACE(1)

NAME
git-stripspace - Remove unnecessary whitespace SYNOPSIS
git stripspace [-s | --strip-comments] < input DESCRIPTION
Clean the input in the manner used by Git for text such as commit messages, notes, tags and branch descriptions. With no arguments, this will: o remove trailing whitespace from all lines o collapse multiple consecutive empty lines into one empty line o remove empty lines from the beginning and end of the input o add a missing to the last line if necessary. In the case where the input consists entirely of whitespace characters, no output will be produced. NOTE: This is intended for cleaning metadata, prefer the --whitespace=fix mode of git-apply(1) for correcting whitespace of patches or files in the repository. OPTIONS
-s, --strip-comments Skip and remove all lines starting with comment character (default #). -c, --comment-lines Prepend comment character and blank to each line. Lines will automatically be terminated with a newline. On empty lines, only the comment character will be prepended. EXAMPLES
Given the following noisy input with $ indicating the end of a line: |A brief introduction $ | $ |$ |A new paragraph$ |# with a commented-out line $ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out. $ | $ |The end.$ | $ Use git stripspace with no arguments to obtain: |A brief introduction$ |$ |A new paragraph$ |# with a commented-out line$ |explaining lots of stuff.$ |$ |# An old paragraph, also commented-out.$ |$ |The end.$ Use git stripspace --strip-comments to obtain: |A brief introduction$ |$ |A new paragraph$ |explaining lots of stuff.$ |$ |The end.$ GIT
Part of the git(1) suite Git 1.8.5.3 01/14/2014 GIT-STRIPSPACE(1)
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