Preliminary user and group management
44 minutes04 secondsText processing and regular expressions
01 Hours06 minutes32 secondsInput and output redirection and pipes
37 minutes46 secondsProcess priority foreground and background
24 minutes24 secondsOperators and startup scripts
58 minutes33 secondsScripts and interactions
48 minutes20 secondsScript flow control
59 minutes48 secondsScriptsed&awk
56 minutes52 seconds