# Linux Command Line

# Advanced

For a more advanced guide on Linux and more in depth commands, visit Linux Guide.

List files in current directory
- ls
- ls -als (long form)
  - Eg. ls -als *.cpp
Move/rename files
- mv [old name] [new name]
  - Eg. mv assignment1.ccp assignment.cpp (rename)
  - Eg. mv assignment1.cpp ~/Documents/CS135/ (move)
Copy files
- cp [original file] [new file name]
  - Eg. cp assignment1.cpp assignment1_copy.cpp
Delete files
- There is no way to recover deleted files
- rm [filesname]
  - Eg. rm assignment1.cpp
- rm -r [directory] (recurse and delete all files in directory as well as directory)
  - Eg. rm -rf ~/Documents/CS135
  - rmdir [directory] can be used if directory is empty
Print current working directory
- pwd
Make directory
- mkdir [directory]
  - Eg. mkdir CS135
Change directory
- cd [directory name]
  - Eg. cd CS135
  - Eg. cd ~/Documents/CS135 (full path if directory is not below current path)
  - Eg. cd (Return to home directory. Equivalent to cd ~)
  - Eg. cd .. (Go up one level in the directory tree)
Print file contents
- cat [filename]
  - Eg. cat assignment1.cpp

Terminate/suspend current foreground process
- Ctrl + C on keyboard to terminate
- Ctrl + Z to suspend
Find a process
- ps
  - Eg. ps -ef | grep [username] (Print processes belong to username)
Logout
- Ctrl + d
- logout

Printing in Linux
- Printing to the default printer: lpr [filename]
- Printing to a different printer: lpr -P[printername] filename
- Checking your default printer and listing the current print jobs: lpq
  - The first line of the output of lpq shows your default printer

Note: You can print when logged on remotely from any location so long as you are logged into bobby, cardiac, or java.

Printing in Windows
- All print menus should work. To check your default printer, go to Start -> Printers and Faxes, and see which printer has a check mark.
Printing Quota
- All students with CS Accounts receive 100 free pages of printing. Additional pages can be purchased for $0.03 per page in whole dollar amounts (RebelCard not accepted). To purchase additional pages, please visit the System Administrator
- Check Your Print Quota (opens new window)

First Log into a UNLV CS Server such as sally.cs.unlv.edu. Email from the terminal (command line / shell prompt) can be sent as follows.
mail user@domain.edu
- This will prompt for a subject and then you can type the body of the mail.
- Hit ctrl-d to send the mail -- EOT (end of transmission) will be displayed.
mail user@domain.edu < file.cpp
- Sends file.cpp in the body of the email with no subject line
mail user@domain.edu,user2@domain.edu < file.cpp
- Same as the above, but sends file.cpp to two recipients
mail -s "Subject line here" user@domain.edu < file.cpp
- Sends file.cpp to a recipient with a subject line

Note: The 'from' address on emails sent will be from your username @unlv.nevada.edu; replies to that email will be sent to your RebelMail account.

For more details on using Linux mail utility, see this page (opens new window).