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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.
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:
to omit "grep -v", put some brackets around a single character
If you use Linux in a Windows domain and there are N days to expiry, this is how you can change it without resorting to a windows machine.
`aria2c` (from the aria2 project) allows. Change -s 4 to an arbitrary number of segments to control the number of concurrent connections. It is also possible to provide multiple URLs to the same content (potentially over multiple protocols) to download the file concurrently from multiple hosts.
This command allows you to see a preview of a picture via the terminal. It can be usefull when you are ssh'ing your server without X-forwarding.
To have en example of the output you can get with this command see http://www.vimeo.com/3721117
Download at http://inouire.net/image-couleur.html
Sources here: http://inouire.net/archives/image-couleur_source.tar.gz
Replace "email@example.com" with the target e-mail address. Thanks to alediaz for "$HOSTNAME" which is very useful when running the command with Apple Remote Desktop to multiple machines simultaneously.
list all the processes
More of the same but with more elaborate perl-fu :-)
Returns nothing if the domain exists and 'No match for domain.com' otherwise.
Shows all those processes; useful when building some massively forking script that could lead to zombies when you don't have your waitpid()'s done just right.
Run the function phpinfo() on the shell
Simple command to convert a large number of images into jpeg-format. Will delete originals after conversion.
OSX's BSD version of the du command uses the -d argument instead of --max-depth.
Use `zless` to read the content of your *rss.gz file:
jhead is a very nice tool to do all sorts of things with photographs, in a batch-oriented way. It has a specific function to rename files based on dates, and the format I used above was just an example.