a:              b:              c:              cat             
cd              chdir           chmod           cls             
commands        copy            cp              copy            
d:              del             dir             dump            
e:              echo            era             erase           
error           exit            f:              fgrep           
g:              h:              hd              hist            
history         i:              j:              ls              
md              mkdir           more            mv              
no history      popd            pushd           pwd             
rd              rm              rmdir           set             
tee             touch           version         y               

