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Full Discussion: Delete Comments
Top Forums UNIX for Dummies Questions & Answers Delete Comments Post 302513875 by eightball on Thursday 14th of April 2011 09:01:49 AM
Old 04-14-2011
Delete Comments

Hello i am back Smilie,

i have a prolem. I want to Delete the IPs which are in Comments.

Input
PHP Code:
192.168.0.1
192.168.0.2
#192.168.0.3
         #192.168.0.4   - when TAB or Space, delete too.
/*192.168.0.5
192.168.0.6
192.168.0.7*\ 
Output
PHP Code:
192.168.0.1
192.168.0.2 
My solution is
PHP Code:
sed -'/^#/d' -'/^$/d' or sed -ne '/^[[:blank:]]*[^#]/p' 
but it isnīt that what i want.

this removes only # with space or TAB
PHP Code:
sed '1p; /^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' 
thx

Last edited by eightball; 04-14-2011 at 10:07 AM..
 

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GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
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