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egrep help required to find pattern

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# 1  
Old 04-18-2011
egrep help required to find pattern
Hi All,

Can some one please help me how to grep the comments from "oracle" & "sybase" code. I would like to grep below type of pattern.
Code:
--
/* */

Please help.
# 2  
Old 04-18-2011
Code:
grep -E '/\*.*\*/|\-\-' file

or if you have multi-line /* */ comments:
Code:
awk '/\/\*.*\*\// || /\/\*/,/\*\//{print}/--/' file

Last edited by kato; 04-18-2011 at 09:10 AM..
# 3  
Old 04-18-2011
Another one:
Code:
awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file

# 4  
Old 04-18-2011
Thanks a lot for your quick revert.

Is it possible to find the pattern in between some sting like below,

Code:
/*
xyz xyz
xyz xyx
*/

For eg. need to exclude evrything between starting "/*" & ending "*/", please advise.
# 5  
Old 04-18-2011
Quote:
Originally Posted by gr8_usk
Thanks a lot for your quick revert.

Is it possible to find the pattern in between some sting like below,

Code:
/*
xyz xyz
xyz xyx
*/

For eg. need to exclude evrything between starting "/*" & ending "*/", please advise.
This command should do the job:
Code:
awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file

This is the output I get:
Code:
$ cat file
Tue Mar 25 23:35:00 GMT 2008
-- COMMENT Tue Mar 25 21:34:23 GMT 2008
Tue Mar 25 18:18:10 GMT 2008
/* COMMENT Mon Mar 26 15:54:13 GMT 2008 */
Mon Mar 26 13:21:40 GMT 2001
Mon Mar 26 13:21:40 GMT 2002
/*
COMMENT Mon Mar 26 13:21:40 GMT 2003
COMMENT Mon Mar 26 13:21:40 GMT 2004
*/
$ 
$ awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file
-- COMMENT Tue Mar 25 21:34:23 GMT 2008
/* COMMENT Mon Mar 26 15:54:13 GMT 2008 */
/*
COMMENT Mon Mar 26 13:21:40 GMT 2003
COMMENT Mon Mar 26 13:21:40 GMT 2004
*/

This User Gave Thanks to Franklin52 For This Post:
gr8_usk
# 6  
Old 05-04-2011
Thanks all for your help. One last question how can I exclude the pattern searched by below code,

Code:
awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file

# 7  
Old 05-04-2011
Quote:
Originally Posted by gr8_usk
Thanks all for your help. One last question how can I exclude the pattern searched by below code,

Code:
awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file

Something like this?
Code:
awk '/--/{next};/\/\*/{p=1};!p;/\*\//{p=0}' file

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