ls
List directory contents
pwd
Print working directory
rm
Remove files or directories
cp
Copy files or directories
mv
Move or rename files or directories
cat
Concatenate and display file content
grep
Search for patterns in files
chmod
Change file permissions
sudo
Execute a command as a superuser
ssh
Secure Shell for remote login
tar
Create or extract archive files
find
Search for files in a directory hierarchy
top
Display system processes