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Shell Programming and Scripting

substitute a line in file

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# 1  
Old 09-24-2008
substitute a line in file
i have an file ,i want to substitute line
003 M 33 22 22 00
WITH NEW
003 M 24 26 28 00
how can i do it
# 2  
Old 09-24-2008
Hammer & Screwdriver Doing it with sed
Code:
> cat file2
003 M 33 22 22 00
004 M 33 22 22 00
005 M 33 22 22 00
006 M 33 22 22 00
> cat file2 | sed "s/003 M 33 22 22 00/003 M 24 26 28 00/g" >file3
> cat file3
003 M 24 26 28 00
004 M 33 22 22 00
005 M 33 22 22 00
006 M 33 22 22 00

Or, without the 'cat' command to get same result:-)
Code:
> sed "s/003 M 33 22 22 00/003 M 24 26 28 00/g" <file2 >file4
> cat file4
003 M 24 26 28 00
004 M 33 22 22 00
005 M 33 22 22 00
006 M 33 22 22 00

# 3  
Old 09-24-2008
thanks its working ,but can u please tell me why you use " " instead of ' '
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