also check if FAI_ROOT is undefined

faiproject · Dec 20, 2020 · a946b8e · a946b8e
1 parent 5b14ef6
commit a946b8e
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/bin/install_packages b/bin/install_packages
@@ -5,7 +5,7 @@
 # install_packages -- read package config and install packages via apt-get
 #
 # This script is part of FAI (Fully Automatic Installation)
-# (c) 2000-2019, Thomas Lange, lange@informatik.uni-koeln.de
+# (c) 2000-2020, Thomas Lange, lange@informatik.uni-koeln.de
 # (c) 2003-2004, Henning Glawe, glaweh@physik.fu-berlin.de
 # (c) 2004     , Jonas Hoffmann, jhoffman@physik.fu-berlin.de
 # PRELOAD feature from Thomas Gebhardt  <gebhardt@hrz.uni-marburg.de>
@@ -130,7 +130,7 @@ my $devnull=">/dev/null" unless $verbose;
 
 $FAI_ROOT = $ENV{FAI_ROOT};
 $classpath = $opt_p || "$ENV{FAI}/package_config";
-$rootcmd = ($FAI_ROOT eq "/" ) ? '' : "chroot $FAI_ROOT";
+$rootcmd = ($FAI_ROOT eq "/" or not defined $FAI_ROOT ) ? '' : "chroot $FAI_ROOT";
 @classes = grep { !/^#|^\s*$/ } split(/[\s\n]+/,$ENV{classes});
 foreach (@classes) { $classisdef{$_}=1;}