This command will find the biggest files recursively under a certain directory, no matter if they are too many. If you try the regular commands ("find -type f -exec ls -laSr {} +" or "find -type f -print0 | xargs -0 ls -laSr") the sorting won't be correct because of command line arguments limit.

This command won't use command line arguments to sort the files and will display the sorted list correctly.

Very useful if you keep switching between the same two branches all the time.

-exec works better and faster then using a pipe

As an alternative to using an additional grep -v grep you can use a simple regular expression in the search pattern (first letter is something out of the single letter list ;-)) to drop the grep command itself.

doesn't do case-insensitive filenames like iname but otherwise likely to be faster

This does the following:

1 - Search recursively for files whose names match REGEX_A

2 - From this list exclude files whose names match REGEX_B

3 - Open this as a group in textmate (in the sidebar)

And now you can use Command+Shift+F to use textmate own find and replace on this particular group of files.

For advanced regex in the first expression you can use -regextype posix-egrep like this:

mate - `find * -type f -regextype posix-egrep -regex 'REGEX_A' | grep -v -E 'REGEX_B'`

Warning: this is not ment to open files or folders with space os special characters in the filename. If anyone knows a solution to that, tell me so I can fix the line.

Set the affinity of a process to a particular core(s).

Arguments for processor include a comma separated list, or a range. (example: 1,2 or 0-3)

You can use top in smp mode (Press 1) to see the changes to the affinity.

Ever need to output an entire directory and subdirectory contents to a file? This is a simple one liner but it does the trick every time. Omit -la and use only -R for just the names

These commands will mark a file as hidden or visible to Mac OS X Finder. Notice the capitol V vs the lowercase v. This will also work for directories.

setfile -a V foo.bar; // This marks the file invisible

setfile -a v foo.bar; // This marks the file visible

I have also found that adding the following aliases are helpful:

alias hide='setfile -a V'

alias show='setfile -a v'

It never ends

:q to quit

( IFS=:; for i in $PATH; do echo $i; done; )

echo $PATH|sed -e 's/:/\n/g' # but the tr one is even better of course

echo $PATH|xargs -d: -i echo {} # but this comes up with an extra blank line; can't figure out why and don't have the time :(

echo $PATH|cut -d: --output-delimiter='

' -f1-99 # note -- you have to hit ENTER after the first QUOTE, then type the second one. Sneaky, huh?

echo $PATH | perl -l -0x3a -pe 1 # same darn extra new line; again no time to investigate

echo $PATH|perl -pe 's/:/\n/g' # too obvious; clearly I'm running out of ideas :-)

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 protected]" 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.