connects to all the screen instances running.

tell you how many Non free software is on your machine, which package it is and which restriction on freedom it has . require vrms package , vrms mean virtual Richard M. Stallman :) Show Sample Output

Require boxes and / or cowsay packages. After input boxes -d dog , type your text and then press ctrl + d . Same goes for cowsay . Show Sample Output

need toilet package , same goes for figlet showfigfonts | less : give the list of font available for options Show Sample Output

sudo apt-get install moon-buggy An ascii 2D game where you control a mooncar and try to avoid moonhole by jumping (press space ) Show Sample Output

sudo apt-get install bb A demoscene intro in ascii art with tracker song

When Ldapsearch queries an Active directory server, all the dates are shown using a timestamp of 18 digits. This perl regexp decodes them in a more human friendly notation. 11644473600 corresponds to some microsoft epoch. Show Sample Output

The British Government entering in the Gregorian era. Show Sample Output

64 elements max on 16 rows, 4 cols. GNU Barcode will adapt automagically the width and the eight of your elements to fill the page. Standard output format is PostScript.

man tac When there is a bad block in the middle of your file, you can see its begninning with `cat' and its end with `tac'. But both commands terminates with an error. So this sequence rebuilds a new file without badblock. Show Sample Output

Show Sample Output

The command is useful when, e.g., booting an existing system with a rescue or installation CD where you need to chroot into the hard-disk and be able to do stuff which accesses kernel info (e.g. when installing Ubuntu desktop with LVM2 you need to mount and chroot the hard disk from a shell window in order to install packages and run initramfs inside chroot). The command assumes that /mnt/xxx is where the chroot'ed environment's root file system on the hard disk is mounted.

Reconfigures time zone in Ubuntu, which I cannot figure out how to do through the GUI. Worked like a charm to set my time zone to CEST from EDT.

Requires the "wajig" package to be installed.

This is the fastest method to search the Debian package database. Requires the dlocate package. The dlocate db updates periodically, but you may force an update with # dlocate-update

Replace FILE with a filename (or - for stdin).

sudo apt-get install sl man sl

This command puts all the flags of the USE variable actually used by the packages you emerged to the file "use", and those which are unused but available to the file "notuse"

Like symlinked directories, you can mount a directory at a different location. For example mounting a directory from one location in to the http root without having to make your program follow symlinks or change permissions when reading.

can display the commands and their output to another user who is connected to another terminal, by example pts/3

'dpkg -S' just matches the string you supply it, so just using 'ls' as an argument matches any file from any package that has 'ls' anywhere in the filename. So usually it's a good idea to use an absolute path. You can see in the second example that 12 thousand files that are known to dpkg match the bare string 'ls'. Show Sample Output

cdrecord -scanbus will tell you the (x,y,z) value of your cdr (for example, mine is 3,0,0)