X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=vpn-static-ip;h=0d500955c8a7299a90c936f0b3f97fdb9566800e;hb=HEAD;hp=bef79330f453bc4992f3267cc6e779f38b16d29c;hpb=103a2e153f844343c359882079936b2521c82f15;p=distro-setup

diff --git a/vpn-static-ip b/vpn-static-ip
index bef7933..0d50095 100755
--- a/vpn-static-ip
+++ b/vpn-static-ip
@@ -1,4 +1,25 @@
 #!/bin/bash
+# I, Ian Kelling, follow the GNU license recommendations at
+# https://www.gnu.org/licenses/license-recommendations.en.html. They
+# recommend that small programs, < 300 lines, be licensed under the
+# Apache License 2.0. This file contains or is part of one or more small
+# programs. If a small program grows beyond 300 lines, I plan to switch
+# its license to GPL.
+
+# Copyright 2024 Ian Kelling
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
 set -eE -o pipefail
@@ -15,7 +36,7 @@ conf=$1
 main() {
   while read -r host port; do
     while read -r ip; do
-      echo $ip | egrep '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' &>/dev/null || continue
+      echo $ip | grep -E '[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*' &>/dev/null || continue
       printf "remote %s %s\n" "$ip" "$port" >>$conf
       ret=0
     done < <(timeout -s 9 1 dig +short $host ||:)