→ Linux Commands → Start Learning / Download MP3 Flashcards

start learning

Question		Answer
man start learning		command for help > man grep
ls start learning		List directory contents -l long listing (ls -l),-al (ls -al) Listing With Hidden Files
grep start learning		Find text in a file grep PATTERN [FILE], grep failed auth. log
cd start learning		Change current directory Forward slashes instead of backward, cd /var/log
shutdown sudo shutdown -r 2 start learning		Safely turn off the computer in software sudo shutdown 2 (turn off in 2min), -r restart, -c cancel or ctrl+c
pwd start learning		Displays the current working directory path Useful when changing directories often
passwd start learning		Change a user account password sudo passwd [username]
mv mv SOURCE DEST start learning		Move a file mv first. txt second. txt
cp cp first. txt second. txt start learning		Copy a file cp SOURCE DEST
rm start learning		Remove files or directories Does not remove directories by default, -r (removes directory)
mkdir mkdir DIRECTORY start learning		Make a directory mkdir notes
chmod r=read, w=write, x=execute start learning		Change mode of a file system object chmod mode FILE, chmod 744 script. sh
chown start learning		Change file owner and group sudo chown [OWNER: GROUP] file, sudo chown professor script. sh
iwconfig start learning		View or change wireless network configuration
ifconfig start learning		View or configure a network interface and IP Slowly being replaced by ip (ip address)
ps start learning		View the current processes ps -e \| more (View all processes)
su / sudo start learning		Some command require elevated rights There are some things normal users can’t do
su start learning		Become super user You continue to be that user until you exit
sudo start learning		Execute a command as the super user Only that command executes as the super user
apt-get start learning		Advanced Packaging Tool (Install, update, remove) sudo apt-get install wireshark
vi start learning		Visual mode editor Full screen editing with copy, paste, and more
dd start learning		Backup and restore an entire partition dd if=<source file name> of=<target file name> [Options]
Creating a disk image start learning		dd if=/dev/sda of=/tmp/sda-image. img
Restoring from an image start learning		dd if=/tmp/sda-image. img of=/dev/sda
killall / kill <pid> start learning		Closing programs sudo killall firefox
xkill start learning		Graphical kill kill an app with one click

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