43 lines
1.2 KiB
Bash
43 lines
1.2 KiB
Bash
#!/bin/sh
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# Check if the terminal supports colour
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# We should know from the TERM evironment variable whether the system
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# is comfigured for a colour terminal or not, but we can also check the
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# tput utility to check the terminal capability records.
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COLORS=8 # Assume initially that the system supports eight colours
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case $TERM in
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linux)
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;; # We know this is a colour terminal
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rxvt)
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;; # We know this is a colour terminal
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*)
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COLORS=`tput colors 2> /dev/null` # Get the number of colours from the termcap file
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esac
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if [ -z $COLORS ] ; then
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COLORS=1 # Watch out for an empty returned value
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fi
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if [ $COLORS -le 2 ] ; then
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# The terminal is not colour
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echo "HW65000 This application requires a colour terminal" >&2
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exit 252 #ERLHW incompatible hardware
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fi
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# We know at this point that the terminal is colour
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# Coloured text
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tput setaf 1 #red
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echo "Red"
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tput setaf 4 #blue
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echo "Blue"
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tput setaf 3 # yellow
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echo "Yellow"
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# Blinking
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tput setab 1 # red background
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tput setaf 3 # yellow foreground
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#tput blink # enable blinking (but does not work on some terminals)
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echo "Flashing text"
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tput sgr0 # reset everything before exiting
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