Time for an 2014 update…

Task/Handle-a-signal/UNIX-Shell/handle-a-signal-3.sh

@@ -1,2 +1,19 @@
-TRAPINT(){ print $n; exit }
-for (( n = 0; ; n++)) sleep 1
+#!/bin/bash
+trap 'echo "Run for $((s/2)) seconds"; exit' 2
+s=1
+
+half_sec_sleep()
+{
+  local save_tty=$(stty -g)
+  stty -icanon time 5 min 0
+  read
+  stty $save_tty
+}
+
+
+while true
+do
+  echo $s
+  half_sec_sleep
+  let s++
+done

Task/Handle-a-signal/UNIX-Shell/handle-a-signal-4.sh

@@ -0,0 +1,2 @@
+TRAPINT(){ print $n; exit }
+for (( n = 0; ; n++)) sleep 1