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Read file and replace..shell script

Comment:

hi, i have an entry: FileName=/home/mqm/adr10098/sample.dat in a file. I want to open this file, search for "FileName=" and then replace the value with someother value(eg: /home/mqm/adr10098/another.dat) using unix shell script. please help me with this. thanks.

Name: WilliamRobertson
Date: May 26, 2003 at 11:36:12 Pacific

Reply:

You can remote-control ed (or ex or vi) using e.g: ed test.dat < edit.macro where edit.macro contains g/^FileName/s/=..*/=some_other_file.dat wq I generally use the most basic editor that supports the edit I want to make. For vi you need to start commands with a colon.

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Reply:

try: cat input_file | sed `s@FileName=*@/home/mqm/adr10098/another.dat@g' > output_file See sed command man page for more details... Twisgabak

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shell script

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