Change password,
passwd
List files and directories in the current location,
ls -lh
Delete a file,
rm <file_name>
Delete a directory,
rm -R <directory_name>
Create a directory,
mkdir <directory_name>
Move files or directories,
mv <old target> <net target>
Compress data,
tar cfz <archive_name>.tar.gz <directory_or_file>
Extract a compressed archive,
tar xfz <archive_name>.tar.gz
Change directory,
cd <target_directory>
Move to the parent directory,
cd ..
Display the current directory,
pwd