The ls command displays the names of the files and directories in the current working directory. Various options are available that allow you to specify which details about the files should be displayed.
Change directory with cd
If you want to change the current working directory, use the cd command. For example cd correspondence would set the current working directory to correspondence , if exited.
Copy a file with cp
The cp command allows you to copy a file and give the copy a new name. It’s always a good idea to make a copy of a file before changing it in case you want to go back to the previous version.
Rename a file with mv
The mv command allows you to rename a file or move it to another directory or both. Entire files and directories can be easily moved even if they have a lot of content, as it only requires changing the way things are linked together.
Create a new directory with mkdir
The mkdir command creates a new directory. Directories can be nested and are useful for organizing large sets of files.
Delete a directory with rmdir
List the contents of a file with more
Locate the files you are looking for with find
More information about a command with man
Edit the content of a file with emacs
Change your password with passwd
After typing passwd at the command line, it will ask for your current and new password.
End your session with the exit
The exit command will take you out of the current shell or session.