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How To Replace Contents in a File?

 
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# 1  
Old 08-22-2013
How To Replace Contents in a File?
How can i replace the contents in a particular line of a file.

Code:
<FOLDERMAP SOURCEFOLDERNAME="FFCB-2012" SOURCEREPOSITORYNAME="Repo_DEV" TARGETFOLDERNAME="TEST" TARGETREPOSITORYNAME="Dev_Repo"/>

For Example I want to replace the SOURCEREPOSITORYNAME="Repo_DEV" to SOURCEREPOSITORYNAME="Repo_Test" and TARGETFOLDERNAME="TEST" to TARGETFOLDERNAME="UAT"

I tried something like this but its replaces every thing after that occurence.

Code:
sed -i s%SOURCEREPOSITORYNAME=.*%SOURCEREPOSITORYNAME="Repo_Test"%g test

Output:
Code:
<FOLDERMAP SOURCEFOLDERNAME="FFCB-2012" SOURCEREPOSITORYNAME=Repo_Test

Thank you.
Last edited by vgersh99; 08-22-2013 at 02:16 PM.. Reason: fixed code tags
# 2  
Old 08-22-2013
Code:
sed -i 's%SOURCEREPOSITORYNAME=[^ ]*%SOURCEREPOSITORYNAME="Repo_Test"%g' test

This User Gave Thanks to vgersh99 For This Post:
Ariean
# 3  
Old 08-22-2013
Quote:
Originally Posted by vgersh99
Code:
sed -i 's%SOURCEREPOSITORYNAME=[^ ]*%SOURCEREPOSITORYNAME="Repo_Test"%g' test

Do i need to always put the sed expression in single quotes?
may i please know what does it mean [^ ]*, what do they denote each those characters?
Appreciate your help it worked thank you.
# 4  
Old 08-22-2013
Quote:
Originally Posted by Ariean
Do i need to always put the sed expression in single quotes?
may i please know what does it mean [^ ]*, what do they denote each those characters?
Appreciate your help it worked thank you.
It is generally advisable to put sed expression in 'ticks' because this avoids substitutions by the shell.
[^ ] a character that is not a space (compare to [^0-9] a character that is not a digit)
[^ ]* a non-space any time (0 times ... many times)
This User Gave Thanks to MadeInGermany For This Post:
Ariean
 
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