Added 'list' tool and improved install/uninstall

lib/tools/install.nom

@@ -41,7 +41,7 @@ download [
         sh> $cmd
     ..if it fails:
         say ("
-            Sorry, the uninstall failed. You may need to re-run as root with `sudo` in front of the command.
+            Sorry, the install failed. You may need to re-run as root with `sudo` in front of the command.
         ")
         exit 1
 

lib/tools/list.nom

@@ -0,0 +1,20 @@
+#!/usr/bin/env nomsu
+#
+    A tool to list installed third party Nomsu packages
+    
+    Usage:
+        nomsu -t list
+    
+use "filesystem"
+use "commandline"
+use "shell"
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+command line program with $args:
+    $packages = (=sh "ls \$(NOMSU PACKAGEPATH)")
+    say "Installed packages:"
+    for $f in ($packages, lines):
+        if ($f != ""):
+            $f = ($f, with "%.nom$" -> "")
+            say "  * \$f"

lib/tools/uninstall.nom

@@ -1,3 +1,4 @@
+#!/usr/bin/env nomsu
 #
     A tool to uninstall third party Nomsu packages (the inverse of the install tool)