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 Show Sample Output

: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 "user@domain.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 Show Sample Output

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

http://localhost/test.php

Simple command to convert a large number of images into jpeg-format. Will delete originals after conversion.