Print odd and even lines from a file

sed -n 2~2p filename

will print even-numbered lines from filename

sed -n 1~2p filename

will print odd-numbered lines.

Source: http://unix.stackexchange.com/questions/26723/print-odd-numbered-lines-print-even-numbered-lines

Create a new user

Type:

useradd username

Set a password:
 
passwd username


To create a new user with directory add -m option

Set up bash as default shell

chsh -s /path/to/shell {user-name}

$ which bash (to kwnow the path to bash)

Source: http://www.cyberciti.biz/faq/howto-set-bash-as-your-default-shell/

Delete files from subdirectories

Delete files of a given type:


(example with *.files):


find . -name \*.swp -type f -delete



Delete files by name:

find . -name "file_name.ext" -delete

Cleanup /var/cache/apt/archives

sudo apt-get clean

Tinyviz codes

export DBG=usr1,usr2

tinyviz -gui -nosf -noconsole -run "/opt/tinyos-1.x/apps/cdShortestPath__copie20-sep/build/pc/main.exe -rf=/opt/tinyos-1.x/apps/topology.nss -b=0" 40

Commands to install wine (i386)

dpkg --add-architecture  i386
aptitude update
aptitude  install wine:i386

A new problem with my printer: "/usr/lib/cups/filter/hpcups failed"

Solution at: https://sites.google.com/site/debianinstallnotes/helps/printers/hp-p1102

Use hp-setup -gui