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This page shows some basic UNIX commands. All students should familiarize
themselves with them. In general, any parameter between < > is
required, while any parameter between [ ] is optional.
File/directory commands
|
Command and usage |
Meaning |
| ls |
List all the files and directories in the current directory |
| cat <file-name>
|
Show the contents of the file file-name on the prompt |
| cp <file-name1> <file-name2>
|
Copy file-name1 to file-name2 |
| mv <file-name1> <file-name2>
|
Move or rename file-name1 to file-name2. Works only if file-name2
does not exist |
| rm <file-name> |
Be careful! Permanently delete file-name |
| pwd |
Prints your working (current) directory |
| cd <dir-name>
|
Enter the directory dir-name from the current directory |
| mkdir <dir-name>
|
Create a new directory dir-name in the current directory |
| rmdir <dir-name>
|
Be careful! Remove permanently the directory dir-name
from the current directory |
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Commonly used programs
|
Command and usage |
Meaning |
| gedit [file-name] |
Opens
the text editor gedit. If file name is specified, gedit starts and
opens the file automatically. If the file does not exist, a new blank
file is created. |
| emacs [file-name] |
Opens
the text editor emacs. If file name is specified, gedit starts and
opens the file automatically. If the file does not exist, a new blank
file is created. |
Remote file commands
| Command and usage |
Meaning |
| ssh <username>@<machine-name> |
Remotely connect to the machine with the username. For example, if user shesh003 wants to connect to the machine chicken.itlabs.umn.edu then the command would be ssh ashesh@chicken.itlabs.umn.edu. |
| logout |
Log out (disconnect) from a connection set by the ssh command |
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