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Hi again, I have one more question here. How can I use sed look the Kth field in the line and then replace it. eg. I want to look up 'cde' then replace the line
cde:aaa:21311:dfjsid
to ...

oh, excellent. Thanks a lot

Hi

I am a beginner to sed command, here I have a question about using sed to add a few characters into a token of a string.

For example, I have a file,
sqw:qqq:123124:uiqe...

Hi

I am a new comer for Unix sys. My Unix experience just less than half a year. Now Im going to purchase a notebook to install Unix system, but I have no idea of the mini setting for the laptop...