Support setting location of ISOs via ISO_LOCATION in /etc/default/grml-rescueboot.

[grml-rescueboot.git] / debian / postinst

diff --git a/debian/postinst b/debian/postinst
index eb3a28d..131e59f 100644 (file)
--- a/debian/postinst
+++ b/debian/postinst
@@ -5,16 +5,24 @@ set -e
 
 case "$1" in
     configure)
-      if ls /boot/grml/*iso >/dev/null 2>&1 ; then
-       if which update-grub >/dev/null 2>&1; then
-         echo "ISOs found inside /boot/grml, invoking update-grub:"
-          update-grub
+      # default, unless configured otherwise:
+      ISO_LOCATION=/boot/grml
+
+      if [ -r /etc/default/grml-rescueboot ] ; then
+       . /etc/default/grml-rescueboot
+      fi
+
+      if ! ls "${ISO_LOCATION}"/*iso >/dev/null 2>&1 ; then
+       echo "INFO: No *.iso files found inside ${ISO_LOCATION}."
+        echo "INFO: Please create ${ISO_LOCATION} and place rescue ISO(s) there."
+       echo "INFO: Finally invoke update-grub and enjoy your rescue system."
+      else
+       if ! which update-grub >/dev/null 2>&1; then
+         echo "WARN: ISOs found inside ${ISO_LOCATION} but update-grub not present (huh?)"
        else
-         echo "WARN: ISOs found inside /boot/grml but update-grub not present (huh?)"
+         echo "INFO: ISOs found inside ${ISO_LOCATION}, invoking update-grub:"
+          update-grub
         fi
-      else
-       echo "No *.iso files found inside /boot/grml/. Please create /boot/grml and"
-       echo "place Grml ISO(s) there. Finally invoke update-grub and enjoy your rescue system."
       fi
     ;;