1#! /bin/sh 2# 3# SPDX-License-Identifier: BSD-2-Clause 4# 5# Copyright (c) 2018-2021 Gavin D. Howard and contributors. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions are met: 9# 10# * Redistributions of source code must retain the above copyright notice, this 11# list of conditions and the following disclaimer. 12# 13# * Redistributions in binary form must reproduce the above copyright notice, 14# this list of conditions and the following disclaimer in the documentation 15# and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 21# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27# POSSIBILITY OF SUCH DAMAGE. 28# 29 30usage() { 31 printf "usage: %s bin_dir link\n" "$0" 1>&2 32 exit 1 33} 34 35# Command-line processing. 36test "$#" -gt 1 || usage 37 38bindir="$1" 39shift 40 41link="$1" 42shift 43 44# For each executable... 45for exe in "$bindir"/*; do 46 47 # If the executable is *not* a link (is our target)... 48 if [ ! -L "$exe" ]; then 49 50 # We do fancy things to preserve the extension of the executable. 51 base=$(basename "$exe") 52 ext="${base##*.}" 53 54 if [ "$ext" != "$base" ]; then 55 name="$link.$ext" 56 else 57 name="$link" 58 fi 59 60 ln -fs "$base" "$bindir/$name" 61 fi 62 63done 64