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Old 06-11-2009, 07:15 PM   #1
Registered: May 2007
Posts: 35

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Sed to read the file and replace and insert the pattern

Hi ,

I want to read from the file and check for the pattern, if the line has some word like <string>: then string should be copied into buffer.

Afterwards, I want to insert the same <string> with some word in the next line of the file.

Could you please help me out to use sed command to perform the above mentioned operations?

Old 06-12-2009, 02:03 AM   #2
Stéphane Ascoët
Registered: Feb 2004
Location: Orleans, 120 km south of Paris
Distribution: Mandrake, Freeduc (the one I'm making), Slackware, MacOS X
Posts: 126

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I think you'd better use awk
Old 06-12-2009, 01:15 PM   #3
Registered: Jun 2008
Posts: 235

Rep: Reputation: 46

do you mean this?

jan@jack:~/tmp> echo 'some text without the pattern
> and then the text with <string>: occurence
> and then the last line' | \
> sed -r '/<string>:/{p;s/.*<(string)>:.*/new word and \1/;}'
some text without the pattern
and then the text with <string>: occurence
new word and string
and then the last line


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