egrep help required to find pattern

Shell Programming and Scripting
1

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.

--
/* */

Please help.

2 
grep -E '/\*.*\*/|\-\-' file

or if you have multi-line /* */ comments:

awk '/\/\*.*\*\// || /\/\*/,/\*\//{print}/--/' file
3

Another one:

awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file
4

Thanks a lot for your quick revert.

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

/*
xyz xyz
xyz xyx
*/

For eg. need to exclude evrything between starting "/" & ending "/", please advise.

5

This command should do the job:

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

This is the output I get:

$ 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
*/
1 Like
6

Thanks all for your help. One last question how can I exclude the pattern searched by below code,

awk '/--/;/\/\*/{p=1};p;/\*\//{p=0}' file
7

Something like this?

awk '/--/{next};/\/\*/{p=1};!p;/\*\//{p=0}' file