Data commit

Task/Terminal-control-Coloured-text/UNIX-Shell/terminal-control-coloured-text.sh

@@ -0,0 +1,43 @@
+#!/bin/sh
+# Check if the terminal supports colour
+
+# We should know from the TERM evironment variable whether the system
+# is comfigured for a colour terminal or not, but we can also check the
+# tput utility to check the terminal capability records.
+
+COLORS=8    # Assume initially that the system supports eight colours
+case $TERM in
+  linux)
+    ;;      # We know this is a colour terminal
+  rxvt)
+    ;;      # We know this is a colour terminal
+  *)
+    COLORS=`tput colors 2> /dev/null`    # Get the number of colours from the termcap file
+esac
+if [ -z $COLORS ] ; then
+  COLORS=1    # Watch out for an empty returned value
+fi
+
+if [ $COLORS -le 2 ] ; then
+  # The terminal is not colour
+  echo "HW65000 This application requires a colour terminal" >&2
+  exit 252    #ERLHW incompatible hardware
+fi
+
+# We know at this point that the terminal is colour
+
+# Coloured text
+tput setaf 1    #red
+echo "Red"
+tput setaf 4    #blue
+echo "Blue"
+tput setaf 3    # yellow
+echo "Yellow"
+
+# Blinking
+tput setab 1    # red background
+tput setaf 3    # yellow foreground
+#tput blink     # enable blinking (but does not work on some terminals)
+echo "Flashing text"
+
+tput sgr0    # reset everything before exiting