Some useful DOS commands which I have never used before
C:\> at 23:00:00 /every:monday cmd /c sysbkup.bat
c:\>doskey ls=dir /od $*
Saving all typed commands to file:
doskey /history >> d:\cmd_history.txt
F7 to display the command history popup window.
Some fun with command line prompt, type: prompt $d$s$t$s$e$s$p$s$$
to recover, type: prompt