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Useful Things to Know
Case Sensitivity in Linux
When you're using Unix/Linux, especially with the Command Line, all files are case sensitive. So if you want to access a file called myFile.txt, you MUST type it in with the same capital letters, otherwise myfile.txt will not be found.
File Name Completion
If you know the partial name of your file but are not sure of the exact name, you can use the Linux File Name completion to find out what it is. You must be in the command line in the folder where the file is located. Type in the first few characters of the name and hit the TAB key. If your file is called myFile, you only need to type myF TAB and Linux will find it.
Daily Backups of Files
If you accidentally overwrite, delete or otherwise change a file which you did not want to remove, you can find it. Our systems back up all of the files in your home directory once a day. You can get to those files by doing the following:
With the File Manager
- Open up your home directory by clicking on the "Home" icon on the desktop.
- In the "Location" bar, type in "file:/home/day_old/yourUserName" (substitute yourUserName for your user name).
- All of the files here are the ones that are a day old. You can move/copy/etc these into your /home directory.
With the Command Line
- Go to the command line (xterm, konsole, etc) and type in cd to go to your home directory.
- Type cd .. to go up one folder (to get to /home).
- Type cd day_old to go to the day_old directory.
- Go to your folder (cd yourUserName).
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- You can copy/move/etc files and folders from here to your /home directory.
To check the last-updated date, go to the day_old directory (see above), and type cat LASTUPDATED_ON and hit enter. This will print out the date and time when the day_old directory was last updated (usually within 24 hours).
Pasting
To paste text, you can highlight the text that you want to copy, go to the place you wish to paste to, and hit the middle-button on the mouse (click on the scroll-wheel).
Problems
If you are having problems with the system, do NOT reboot the computers. Contact the professor or proctor on duty.
Finishing Up
When you are done using the computer, please remember to logout (use the K-menu at the bottom left of the screen and choose logout). Never shut off the computer.
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