UNIX for Dummies Questions & Answers

How can I delete comments (lines beginning with /* and ending with */) in file?
with single command line..My suggestion is to use grep and sed!

You don't need grep. Sed alone will do the job.

Hello,

i am replying rather old post, but i have the similar problem with slight variation.

when i use command:

sed '/*,*/d' somefile.c

suppose the file somefile.c contains
line

/* this is an example */

its removing comeplete line but when i have a line

/*
this is an example
*/
its removing only /* and */
and not the text between /* and */

i can easily implement the commad using command line arguments.
but i want to know is there any command that deletes the entire characters present under /* and */ when they are in different lines.

Thanks,

From http://sed.sourceforge.net/grabbag/t...t_with_sed.txt

Code:

!/usr/bin/sed -f

# if no /* get next
/\/\*/!b

# here we've got an /*, append lines until get the corresponding
# */
:x
/\*\//!{
N
bx
}

# delete /*...*/
s/\/\*.*\*\///

If you are looking for a solution from other sed & awk then, look at CLOC.

CLOC -- Count Lines of Code