Turn off the monitor in command line mode (runlevel 3) in RHEL

In runlevel 3, RHEL (most Linuxes, probably) only blanks the monitor after so much inactivity, it doesn’t tell the monitor to actually turn off. This has annoyed me for years, but I just found a command to turn off and on the monitor:

# /usr/sbin/vbetool dpms [off|on]

I’ve haven’t rigged it to be triggered by console activity yet, but at least I can manually turn off and on the monitor through software now.

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