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Top Forums UNIX for Dummies Questions & Answers Insert Text on lines having the string word Post 302467290 by Orbix on Thursday 28th of October 2010 11:46:20 PM
Old 10-29-2010
Insert Text on lines having the string word

I need help on how I can accomplish my task. I hope someone can help me since I've researching and trying to accomplish this for hours now. Basically, I need to comment-out (or insert a # sign in the beginning of the line) a line when the line has the specific word I am searching. Example I have this line:

Quote:
PM1SYSGFATRAGATEGFAGESDAFSOCAAGAAAGAG
ATAGATESETSOACGATATEGGPQMALDFJANMAGAG
LHAGNAGMLONAGLONLAGLQEEDAFGSTGXCGAGTA
OLAGULNUAGHALUDLNQPSOACNAGONLAONGAAGA
On line 2 & 4, the word SOAC (this is what I am searching for) appears, now I need the whole line be commented out just like below:

Quote:
PM1SYSGFATRAGATEGFAGESDAFSOCAAGAAAGAG
#ATAGATESETSOACGATATEGGPQMALDFJANMAGAG
LHAGNAGMLONAGLONLAGLQEEDAFGSTGXCGAGTA
#OLAGULNUAGHALUDLNQPSOACNAGONLAONGAAGA
then, I also need another code to reverse the effect, that is if the line has the word SOAC, it will remove the # sign at the beginning of the line. Thanks in advance for those who can help me!
 

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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 1.8.3.1 06/10/2014 GIT-STRIPSPACE(1)
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