Improved treelive to accept parameters

Author: Matthew McCullough

treelive

@@ -1,8 +1,19 @@
 #!/bin/bash
 
+#Ensure we have the quantity specified on the CLI
+if [ -z "$1" ]; then ARG_ERR=ERR; fi
+if [ -n "$ARG_ERR" ];
+then
+    echo "Usage: treelive <depth>"
+    echo "Usage: treelive <depth> <OTHERTREEARGS>"
+    exit
+fi
+
+DEPTH=$1
+
 while :
 do
     clear
-	tree $*
+    tree -L $*
     sleep 2
 done