A Short List of Usefull Commands

Files and Directories
`cd`	"change directory" When this command is entered without argument, it will change the directory to the home directory of the user. If a directory name is entered after the command, it will change to this directory. To go one directory up use "`cd ..`". Example: `cd /G/TRAINING/T1`
`cp`	"copy" Copies a file to another destination or copy it with another name. The first argument is the original, the second is the new destination or name. Example: `cp MTEST-VME-T1_startup.script test` This command makes a copy from the original file `MTEST-VME-T1_startup.script` and names the copy `test`.
`ll`	"long list" This is a short cut of the command "`ls -l`", which lists the contents of a directory in a detailed way. The command needs no arguments. A line of the output looks like `-rw-rw-r- 1 zimoch_e sls 686 Mar 30 08:29 startup.script` The first ten characters show the file access permissions (and if it is a file or a directory), then the owner of the file and the group the owner belongs to are displayed. The number `686` in the example line is the file size in bytes. Then the date of the last change is shown and finaly the name of the file.
`pwd`	"print working directory" Shows the full name of the current directory. The command takes no argument.
`rm`	"remove" This will delete the file given as argument. Attention: The file is gone after this command! There is no trashcan where you can get it back if you accidentally deleted it. Think twice! Example: `rm test`
Text Files
`nedit`	One of the many editors available on Linux. It is easy to use and therefore will be used in the EPICS Training. If you give a file name after the command, this file will be opened in the editor. Otherwise, if you do not specify a file, a blank editor is opened and you can choose a file with the menu File (and then Open....). Example: `nedit G_TRAINING_T1_COOLER.template`
Commands with Graphical Interfaces
`tkdiff`	Shows the differences between two files on a graphical user interface. The two files can be added as arguments or selected when the program starts.
`tkcvs`	This is a graphical user interface for CVS (Concurrent Versions System) which is used at the SLS to keep track of all important files.
Online Help
`man`	Shows a help text for a command (from manual). Example: `man man`