Update to bash-4.1

1 files changed, 29 insertions, 0 deletions

diff --git a/examples/scripts/timeout2 b/examples/scripts/timeout2
new file mode 100755
index 0000000..2c6fb77
--- /dev/null
+++ b/examples/scripts/timeout2
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+# Author: P@draigBrady.com
+# V1.0  : Nov  3 2006
+#
+#  Execute a command with a timeout.
+#  If the timeout occurs the exit status is 128
+#
+#  Note there is an asynchronous equivalent of this
+#  script packaged with bash (under /usr/share/doc/ in my distro),
+#  which I only noticed after writing this.
+
+if [ "$#" -lt "2" ]; then
+    echo "Usage:   `basename $0` timeout_in_seconds command" >&2
+    echo "Example: `basename $0` 2 sleep 3 || echo timeout" >&2
+    exit 1
+fi
+
+cleanup()
+{
+    kill %1 2>/dev/null             #kill sleep $timeout if running
+    kill %2 2>/dev/null && exit 128 #kill monitored job if running
+}
+
+set -m               #enable job control
+trap "cleanup" 17    #cleanup after timeout or command
+timeout=$1 && shift  #first param is timeout in seconds
+sleep $timeout&      #start the timeout
+"$@"                 #start the job