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copies 20 most recently downloaded mp3 files (such as from Miro) into a directory
Change ~/tmp to the destination directory, such as your mounted media. Change -n20 to whatever number of files to copy. It should quit when media is full. I use this to put my most recently downloaded podcasts onto my phone.

Encode a string using ROT47
This command will encode a string using the ROT47 cipher.

Rename all files in lower case
rename is a really powerfull to, as its name suggests, rename files

diff current vi buffer edits against original file

dont execute command just add it to history as a comment, handy if your command is not "complete" yet

check open ports without netstat or lsof

shush MOTD
I'm annoyed by the boilerplate "don't login unless you are supposed messages in our environment" - this shuts them up.

Equivalent to ifconfig -a in HPUX

Backup a filesystem to a remote machine and use cstream to throttle bandwidth of the backup
This command will nicely dump a filesystem to STDOUT, compress it, encrypt it with the gpg key of your choice, throttle the the data stream to 60kb/s and finally use ssh to copy the contents to an image on a remote machine.

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)
Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.


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