#!/bin/bash
-# Copyright (C) 2014 Ian Kelling
-# This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
+# Copyright (C) 2016 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.
teeu() {
- local help="Usage: appendu [-h|--help] FILE
+ local help="Usage: appendu [-h|--help] FILE [LINE]
+Append LINE if it's not already in FILE
-Tee unique. Append each stdin line if it does not exist in the file.
+If no LINE is specified, process each line from STDIN.
+teeu is short for tee unique.
- [-h|--help] display this message"
+-h|--help display this message"
-
if [[ $1 == --help || $1 == -h ]]; then
echo "$help"
return
fi
-
- if [[ ${#@} == 0 ]]; then
- echo "error: need 1 or more arguments"
+
+ if (( ${#@} == 0 )) ; then
+ echo "teeu error: need 1 or more arguments"
echo "$help"
return 1
fi
-
local MAPFILE
- mapfile -t
+ (( ${#@} >= 2 )) && MAPFILE="${@:2}" || mapfile -t
for line in "${MAPFILE[@]}"; do
grep -xFq "$line" "$1" &>/dev/null || tee -a "$1" <<<"$line"
done