ls – list the contents of the current directory
ls -a – list the contents of the current directory including hidden files)]
ls -l – shows you file permissions and ownership
cd – change directory
cp – copy
scp – secure copy
chmod – change permissions
chown – change the owner of a file
/ – top level directory
Tab key – autocomplete words
grep – search file
wc – count characters/words/lines
up arrow – shows your previous commands
mkdir (directory name) – make a new directory with the name given
rm -R (directory name) – delete directory
cd ../ – move up a directory in the file system (parent directory)
touch (filename) – create file
nano (filename) – create file using nano command line text editor
cat – view the contents of a text file.
more – view the contents of a text file, allows you to view by page (spacebar to move to the next page)
rm (filename) – delete file
rm *.(filetype) – delete all files of a specified type
rmdir – remove directory
yum update – updates the package cache
^ – symbol is Ctrl (called the caret)
Ctrl + C – cancels the command
wget (Link to file) – downloads the file from internet
sudo logout – logout (only needs sudo if a non root user)
sudo reboot – reboot server (only needs sudo if a non root user)
su – logs in as root if already logged in as a non root user
You may also read Monitor Usage in Linux Server too for additional commands.