Switch to new download format and update package scripts

post_remove.sh

@@ -1,7 +1,10 @@
-#!/bin/bash
+#!/bin/sh
 
-SHELL="/bin/zsh"
+SHELLS="/bin/zsh /usr/bin/zsh"
 
-if grep "${SHELL}" "$BPM_ROOT"/etc/shells; then
-  sed -i "\|${SHELL}|d" "$BPM_ROOT"/etc/shells
-fi
+for _shell in $SHELLS; do
+  if grep -q "^${_shell}\$" /etc/shells; then
+    echo "Removing '$_shell' from /etc/shells..."
+    sed -i "\|^${_shell}\$|d" /etc/shells
+  fi
+done