MIND BLOWING SUPER COOL LINUX COMMANDS NOTE: YouTube won't allow the angled brackets that represent "greater than" and "less than" to be posted in the description text. I have indicated their use in the commends below but you'll have to replace them yourself. :) CREATE A TEXT FILE WITHOUT USING AN EDITOR cat (greater than) -- Creates small text file. Use Ctrl+D to send text to file. cat (two greater than) -- Appends lines to bottom of pre-existing file. NAVIGATE THE SYSTEM BY PUTTING DIRECTORIES ON A STACK pushd /directory -- Moves to new directory. popd -- brigs you back to original directory USE RANGES IN A COMMAND mkdir test{ } -- Creates 10 numbered directories. RESET RESERVED EXT4 SPACE TO 1%: tune2fs -m 1 /dev/(partition) Ex. sudo tune2fs -m 1 /dev/sda1 GET INFO FROM A COMMAND IN REAL TIME watch (command) Ex. watch free -h OPEN NEW ROOT BASH ENVIRONMENT sudo bash OR sudo -s -- Use "exit" to return to your own shell. USE WGET TO DOWNLOAD FILES FROM THE INTERNET wget -- Downloads Google Chrome installer package into the current directory. HIDE YOUR CURSOR tput civis -- Hides cursor. tput cnorm -- Brings cursor back. FIX A TERMINAL THAT'S GONE CRAZY . .profile -- Reloads your environment. reset -- resets the terminal completely. FIND A COMMAND IN HISTORY Ctrl+R -- Activates history search: Start typing to search for text. Pressing enter without typing will exit search. STRING COMMANDS TOGETHER AT PROMT AS THEY WOULD RUN IN A SCRIPT command 1; command 2; command 3; ... -- Runs one command after another regardless of any command's exit code. command 1 && command 2 && command 3 && ... -- Only runs the next command if the one before it exits without an error. command 1 || command 2 || command 3 || ... __ Only runs the next command if the one before it exits with an error AUTOMATICALLY LOOK FOR AND INSTALL PACKAGES IN A SCRIPT dpkg -l | grep -qw gdebi || sudo apt-get install -yyq gdebi -- Install gdebi package if it is not already installed. THROW UNWANTED OUTPUT IN THE BIT BUCKET command (greater than) /dev/null 2(greater than)&1 --Sends both stdout and stderr data to oblivion. SHUTDOWN YOUR COMPUTER AT A LATER TIME shutdown -h 90 --Shuts down the computer in 90 minutes. shutdown -h 23:30 --Shuts down the computer at 11:30 PM.