update/refactor

scripts/dpkg-search.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -ef
+: "${1:?}"
+
+if dpkg-query --search "$1" ; then
+	exit 0
+fi
+
+case "$1" in
+*\** | *\?* )
+	env printf '%s does not support globs: %q\n' "${0##*/}" "$1" >&2
+	exit 1
+;;
+esac
+
+while read -r f ; do
+	[ -n "$f" ] || continue
+	dpkg-query --search "$f" || continue
+	exit 0
+done <<EOF
+$(set +e ; find / -xdev -follow -samefile "$1" 2>/dev/null | grep -Fxv -e "$1")
+EOF
+
+exit 1