cal                           pulls up a simple calendar for the month
cal 2003                      pulls up all calenders for 2003
cal 2003 8                    pulls up calender for august 2003
ls                            see directory's contents
ls -l filename                see file's permissions
ls -al                        see all permissions within main directory
ls -ld                        see permissions for parent directory
cd directory                  change to another directory
cd ..                         go up one directory
pwd                           display current directory
df -h                         view status of disk usage
mkdir directory               create a directory
mv file1 file2                rename a file
cp (scp) file1 file2          copy a file (over the internet)
rm file                       remove a file
less file                     view a file
ftp (sftp)                    deposit/retrieve a file over the internet (password-encrypted)
man command                   gives directions and options
nedit                         text editor (aliased to n)
emacs			      text editor
eog file                      view a .jpeg, .gif, .png, .tif, etc., file
okular file                   view a .pdf or .ps file
soffice                       start up StarOffice, a Windows "simulator"
acro                          start up AcroRead (for .pdf files)
gunzip file                   to uncompress .gz files

ssh computer		      connect to another computer (password-encrypted)
tar cvf name.tar * 	      copy everything into a tar file called name.tar
tar -xvf name.tar             extract everything from a tar file called name.tar
source ~/.cshrc    	      update initialization file .cshrc in your home directory
grep xyz file		      search for text 'xyz' in 'file'
locate file		      search for 'file' on hard disk

Ctrl c                        aborts most anything