What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

Universal configuration monitoring and system of record for IT.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:



2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.

Top Tags



Send a local file via email

Terminal - Send a local file via email
cat filename | uuencode filename | mail -s "Email subject" [email protected]
2009-09-21 04:13:50
User: amaymon
Functions: cat mail uuencode
Send a local file via email

uuencode the file to appear as an attachment


There is 1 alternative - vote for the best!

Terminal - Alternatives
mutt your@email_address.com -s "Message Subject Here" -a attachment.jpg </dev/null
2009-12-10 22:49:38
Tags: mutt

Send it the easy way, with MIME and everything handled for you by an app that knows best.

mpack -s "Backup: $file" "$file" [email protected]
2009-12-11 04:03:06
User: sentinel
Tags: mutt

Another way of sending an attachment.

-s : subject

file : file to be sent

cat filename | mail -s "Email subject" [email protected]
2009-09-20 01:38:23
Functions: cat mail
Tags: cat mail

This just reads in a local file and sends it via email. Works with text or binary. *Requires* local mail server.

echo "see attached file" | mail -a filename -s "subject" email@address
2009-09-21 11:58:49
User: gnpf
Functions: echo mail
Tags: mail

if "mail -a" fail, try "mutt -a" or "nail -a"

{ echo -e "$body"; uuencode "$outfile" "$outfile"; } | mail -s "$subject" "$destaddr" ;
2009-12-10 18:08:59
User: glaudiston
Functions: echo mail uuencode
Tags: cat mail

on this way we can define the body too

Know a better way?

If you can do better, submit your command here.

What others think

In what package is uuencode ? I don't have it installed on my Ubuntu ...

Comment by CodSpirit 291 weeks and 5 days ago

why you don't use the "-a" switch from mail/nail/mutt binary?

echo "see attached file" | mail -a filename -s "subject" email@address

it depends on some distributions if the -a switch is available.


Comment by gnpf 291 weeks and 4 days ago

@CodSpirit this should help you : http://ubuntuforums.org/showthread.php?t=44147 but have a look at the second comment.

@gnpf : 'cos on the aix/sun/hp on which i'm working haven't the recent version. so no mutt, old mail. My command isn't the best way, but it's the best one when you dont have recent or fresh *nix install

Comment by amaymon 291 weeks and 4 days ago

Useless use of cat

uuencode filename filename | mail -s "Email subject" [email protected]
Comment by arcege 291 weeks and 4 days ago

@CodSpirit uuencode is included in the sharutils package on Ubuntu; used to be part of uucp.

Comment by arcege 291 weeks and 4 days ago

@arcege yes you're right but it never work for me :-(

Comment by amaymon 291 weeks and 4 days ago

Your point of view

You must be signed in to comment.