Autoremove

sudo apt-get autoremove

Changing images size with ImageMagick

sudo apt-get install imagemagick
cd nameofthefolder
mogrify -resize 1024 *.JPG

Domain information

dig ns stavrev.net
dig a stavrev.net
dig mx stavrev.net

Computer hardware information

sudo lshw

Changing directory permissions CHOWN

sudo chown -R root:root nameofthefolder

Editing GRUB

sudo gedit /boot/grub/menu.lst

SQL from “cp1251″ to “utf8″

iconv -f utf8 -t utf8 db1.sql > db2.sql
iconv -c -f utf8 -t utf8 db1.sql > db2.sql