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How to delete particular lines

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Name: smilee4smile
Date: November 13, 2007 at 23:01:12 Pacific
OS: Solaris
CPU/Ram: 256MB
Product: sun
Comment:

Hi,
How can i delete the lines which ever is having **'s in a shadow file.


Thanks & Regards,
Sunil :-



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Response Number 1
Name: Sujan (by Sujan Banerjee)
Date: September 5, 2008 at 06:06:28 Pacific
Reply:

Hi Sunil
Sorry for late response.
I am not sure what you wish to delete.
Anyway I want to overwrite file by removing all lines with '**'.
Try
bash#sed '/\*\*/d' sunilfile|sed 'w sunilfile'
If string is say "mystring",it would be:-
bash#sed '/mystring/d' sunilfile|sed 'w sunilfile'
CAUTION:-
1)Test it first on some dummy file
2)Never play around with passwd,shadow or group files

Please Respond back if it was of any use.


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