qemush : suppression de toute trace de bash

bin/qemush

@@ -145,11 +145,22 @@ public_rm() {
     exec rm -vi -- "$@"
 }
 
-# Invoke bash as qemu user in its home directory
+# Invoke a shell as qemu user in its home directory
 public_shell() {
     cd || return
 
-    exec bash -i
+    # Again...
+    # shellcheck disable=2209
+    [ -z "$SHELL" ] && SHELL=sh
+
+    set -- "$SHELL"
+    case "$SHELL" in
+        sh|bash|zsh|ksh|mksh|oksh)
+            set -- "$@" -i
+            ;;
+    esac
+
+    exec "$@"
 }
 
 # Output the content of an entrypoint, with coloration if on a virtual