fixing renderText script

countdown

@@ -0,0 +1,51 @@
+# script to create timer in terminal
+# Jason Atwood
+# 2013/6/22
+#!/bin/sh
+
+# start up
+echo "starting timer script ..."
+sleep 1 # seconds
+
+# get input from user
+echo "Timer for how many minutes?"
+read DURATION
+DURATION=$(( $DURATION*60 )) # convert minutes to seconds
+
+# get start time
+START=$(date +%s)
+
+# infinite loop
+while [ -1 ]; do
+clear # clear window
+
+# do math
+NOW=$(date +%s) # get time now in seconds
+DIF=$(( $NOW-$START ))  # compute diff in seconds
+ELAPSE=$(( $DURATION-$DIF ))    # compute elapsed time in seconds
+MINS=$(( $ELAPSE/60 ))  # convert to minutes... (dumps remainder from division)
+SECS=$(( $ELAPSE - ($MINS*60) )) # ... and seconds
+
+# conditional
+if [ $MINS -eq 0 ] && [ $SECS -eq 0 ] # if mins = 0 and secs = 0 (i.e. if time expired)
+then # blink screen
+for i in `seq 1 180`; # for i = 1:180 (i.e. 180 seconds)
+do
+clear # flash on
+setterm -term linux -back red -fore white # use setterm to change background color
+echo "00:00 " # extra tabs for visibiltiy
+
+sleep 0.5
+
+clear # flash off
+setterm -term linux -default # clear setterm changes from above
+echo "00:00" # (i.e. go back to white text on black background)
+sleep 0.5
+done # end for loop
+break   # end script
+
+else # else, time is not expired
+echo "$MINS:$SECS"  # display time
+sleep 1 # sleep 1 second
+fi  # end if
+done    # end while loop