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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Show a script or config file without comments

Terminal - Show a script or config file without comments
sed -e '/^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' -e '/^$/d' -e '/^\/\/.*/d' -e '/^\/\*/d;/^ \* /d;/^ \*\//d' /a/file/with/comments
2009-11-10 17:47:22
Functions: sed
Show a script or config file without comments

Strips comments from at least bash and php scripts. Normal # and // as well as php block comments

removes all of the:

empty/blank lines

lines beginning with #

lines beginning with //

lines beginning with /*

lines beginning with a space and then *

lines beginning with */

It also deletes the lines if there's whitespace before any of the above.

Add an alias to use in .bashrc like this:

alias stripcomments="sed -e '/^[[:blank:]]*#/d; s/[[:blank:]][[:blank:]]*#.*//' -e '/^$/d' -e '/^\/\/.*/d' -e '/^\/\*/d;/^ \* /d;/^ \*\//d'"


There are 3 alternatives - vote for the best!

Terminal - Alternatives
egrep -v "^$|^[[:space:]]*#" /etc/some/file
2009-05-12 07:14:48
User: michauko
Functions: egrep
Tags: egrep

Shows a file without comments (at least those starting by #)

- removes empty lines

- removes lines starting by # or "some spaces/tabs then #'"

Useful when you want to quickly see what you have to customize on a freshly installed application without reading the comments that sometimes are a full 1000 lines documentation :)

While posting, I saw this http://www.commandlinefu.com/commands/view/1041/display-contents-of-a-file-wo-any-comments-or-blank-lines

But it's dirty and incomplete, to my mind

My original goal was to remove lines like "\t*#" but I can't figure out how to do a egrep '\t' on a command-line. Two workarounds if needed:

egrep -v 'press control + V then TAB then #' /your/file


egrep -v -f some_file /your/file #where some_file contains what you want to exclude, example a really inserted TAB
sed -e 's/#.*//;/^\s*$/d'
egrep -v "^$|^#" file
egrep -v "^[[:blank:]]*($|#|//|/\*| \*|\*/)" somefile
grep -v ^# /etc/somefile.conf | grep .
2011-05-17 01:24:08
User: kad
Functions: grep
Tags: grep

easier to remember

Know a better way?

If you can do better, submit your command here.

What others think

egrep -v "^[[:blank:]]*($|#|//|/\*| \*|\*/)" /etc/some/file

Does all the sed version does....

Comment by sdadh01 362 weeks and 3 days ago

Has anyone got version which also strips multiline-comments, like:

/* comment

blablabla */







Comment by alvinx 362 weeks and 2 days ago

Your point of view

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