Shell commands

ls: List directory contents

cd: Change the current directory

mkdir: Create a new directory

rm: Remove files or directories

pwd: Print the current working directory

hostname: Display the name of the current host system.

rmdir: Remove empty directories.

pushd: push directory

popd: pop directory

cp: copy a file or directory

mv: move a file or directory

less: page through a file

cat: print the whole file

xargs: execute arguments

find: find files

man: read manual

apropos: find which manual page is appropriate

grep: search for specific patterns within files.

env: look at your environment

echo: print some arguments

export: export/set a new environment variable or update an existing one.

exit: exit the shell

sudo: super user