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# 1  
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 -e '/^#/d' -e '/^$/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..
# 2  
Old 04-14-2011
Try:
Code:
perl -lp0e 's/#.*\n//g;s/\/\*.*?\*\\//sg' file

# 3  
Old 04-14-2011
Quote:
Originally Posted by eightball
Hello i am back Smilie,

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

Input
[PHP]
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*\
Shouldn't the last line
Code:
192.168.0.7*\

be
Code:
192.168.0.7*/

?
# 4  
Old 04-14-2011
sorry i mean /* */
# 5  
Old 04-14-2011
Try:
Code:
awk '/#/{next} /\/\*/{p=1} /\*\//{p=0;next}!p' file

# 6  
Old 04-14-2011
Quote:
Originally Posted by eightball
sorry i mean /* */
Then try this:
Code:
perl -lp0e 's/#.*\n//g;s/\/\*.*?\*\///sg' file

# 7  
Old 04-14-2011
The opposite approach - grep for "good" lines.
Code:
grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$' file

 
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