This file is indexed.

/usr/bin/ng is in ng-common 1.5~beta1-3ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/bash
# Copyright (c) 2000 Yasuhiro Take <take@debian.org>
# Copyright (c) 1999 Fumitoshi UKAI <ukai@debian.or.jp>
# Copyright (c) 1999 Jacobo Tarrio Barreiro <jtarrio@iname.com>
# This program is covered by the GNU General Public License version 2
#

if [ -n "$NG" ]; then
  test -x /usr/bin/$NG && exec /usr/bin/$NG "$@"
fi

test -x /usr/bin/ng-cjk-canna && NG=/usr/bin/ng-cjk-canna
test -x /usr/bin/ng-cjk && NG=/usr/bin/ng-cjk
test -x /usr/bin/ng-latin && NG=/usr/bin/ng-latin

if [ -x /usr/bin/locale ]; then
  eval `locale`
fi
locale=${LC_ALL:-$LANG}

case X"$locale" in
  Xja|Xja_JP|Xja_JP.*)
    [ -x /usr/bin/ng-latin ] && NG=/usr/bin/ng-latin
    [ -x /usr/bin/ng-cjk ] && NG=/usr/bin/ng-cjk
    [ -x /usr/bin/ng-cjk-canna ] && NG=/usr/bin/ng-cjk-canna
    ;;
  Xko|Xko_KR|Xko_KR.*|Xzh|Xzh_CN|Xzh_CN.*)
    [ -x /usr/bin/ng-latin ] && NG=/usr/bin/ng-latin
    [ -x /usr/bin/ng-cjk-canna ] && NG=/usr/bin/ng-cjk-canna
    [ -x /usr/bin/ng-cjk ] && NG=/usr/bin/ng-cjk
    ;;
  *)
    [ -x /usr/bin/ng-cjk-canna ] && NG=/usr/bin/ng-cjk-canna
    [ -x /usr/bin/ng-cjk ] && NG=/usr/bin/ng-cjk
    [ -x /usr/bin/ng-latin ] && NG=/usr/bin/ng-latin
    ;;
esac

if [ -n $NG ]; then
  exec $NG "$@"
else
  echo "Neither ng-latin, ng-cjk, nor ng-cjk-canna found."
  echo "Please install what you prefer."
fi