commandline session
$which ls /bin/ls $which firefox /usr/bin/firefox $which grep /bin/grep $which whatis /usr/bin/whatis $whatis which which (1) - locate a command $whatis whatis whatis (1) - display manual page descriptions $whatis linux linux: nothing appropriate. $whatis kcore kcore: nothing appropriate. $whatis mysql mysql: nothing appropriate. $whatis locate locate (1) - find files by name
following video tutorial content may not be accurate
[youtube https://www.youtube.com/watch?v=rLSRFvL-DVE?rel=0&w=560&h=315]