UNIX System Shell
We interact with UNIX through shell commands
Three popular shells sh Bourne shell $prompt ksh Korn shell $prompt csh C-shell %prompt
Examples of shell commands: %ls - list files in current directory %man command - manual for command %cd dir - enter directory dir %pwd - name curent directory %cp src dest - copy src to dest %mv src dest - move src to dest %rm f1 - remove file f1 %rmdir dir - remover directory dir %mkdir dir - create a new directory dir %rm * - BEWARE !!! Removes all files!!!