Make dpkg exec smarter; Update bash, tcsh, and zsh

1 files changed, 25 insertions, 0 deletions

diff --git a/data/bash/_metadata/prerm b/data/bash/_metadata/prerm
new file mode 100755
index 000000000..500128886
--- /dev/null
+++ b/data/bash/_metadata/prerm
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+set -e
+
+case "$1" in
+    upgrade)
+  ;;
+
+    remove|deconfigure)
+      update-alternatives --quiet --remove sh /bin/bash
+      dpkg-divert --quiet --remove /bin/sh
+      if [ ! -e /bin/sh ]; then
+          echo There would be no shell!
+          ln -s bash /bin/sh
+          exit 1
+      fi
+  ;;
+
+    failed-upgrade)
+  ;;
+    *)
+        echo "prerm called with unknown argument \`$1'" >&2
+        exit 1
+  ;;
+esac