Hide

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.

Hide

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:

Hide

News

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.
Hide

Tags

Hide

Functions

Create a CD/DVD ISO image from disk.

Terminal - Create a CD/DVD ISO image from disk.
readom dev=/dev/scd0 f=/path/to/image.iso
2009-03-08 13:21:23
User: atoponce
44
Create a CD/DVD ISO image from disk.

Many like to use 'dd' for creating CD/DVD iso images. This is bad. Very bad. The reason this is, is 'dd' doesn't have any built-in error checking. So, you don't know if you got all the bits or not. As such, it is not the right tool for the job. Instead, 'reaom' (read optical media) from the wodim package is what you should be using. It has built-in error checking. Similarly, if you want to burn your newly creating ISO, stay away from 'dd', and use:

wodim -v -eject /path/to/image.iso

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
dd if=/dev/cdrom of=whatever.iso
2009-09-05 09:19:41
User: 0disse0
Functions: dd
Tags: backup dd iso dvd
6

A dear friend of mine asked me how do I copy a DVD to your hard drive? If you want to make a copy of the ISO image that was burned to a CD or DVD, insert that medium into your CD/DVD drive and (assuming /dev/cdrom is associated with your computer?s CD drive) type the following command

cp /dev/cdrom file.iso

Know a better way?

If you can do better, submit your command here.

What others think

what? no mkisofs?

Comment by linuxrawkstar 152 weeks and 2 days ago

you should checksum your images anyway, will not `dd` be marginally faster?

dd bs=2048 if=/dev/cdrom | tee image.iso | md5sum | tee image.iso.md5
Comment by asmoore82 152 weeks and 2 days ago

Sure, you can checksum, and if it doesn't match up, you get to do it again? Why not fix the errors on the fly? And no, dd won't be marginally faster. It will move at the same pace as readom- the pace of your hardware.

Comment by atoponce 152 weeks and 2 days ago

Great command! Thanks.

Comment by bwoodacre 152 weeks ago

Thanks this it the right command

Comment by megerdin 149 weeks and 4 days ago

Your point of view

You must be signed in to comment.

Related sites and podcasts