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Ask a Yes/No question and executes an action dependent on the answer
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#!/bin/bash | |
# Asks a user a Yes/No question and executes actions dependent on the answer. | |
# Copyright (C) 2015 Christoph "criztovyl" Schulz | |
# | |
# This program is free software: you can redistribute it and/or modify | |
# it under the terms of the GNU General Public License as published by | |
# the Free Software Foundation, either version 3 of the License, or | |
# (at your option) any later version. | |
# | |
# This program is distributed in the hope that it will be useful, | |
# but WITHOUT ANY WARRANTY; without even the implied warranty of | |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
# GNU General Public License for more details. | |
# | |
# You should have received a copy of the GNU General Public License | |
# along with this program. If not, see <http://www.gnu.org/licenses/>. | |
function yesdo() | |
# Ask the user a question and executes an action dependent on answer. | |
# Defaults to yes. | |
# | |
# Usage: question action notaction | |
# question: the question asked ("[nY] " is appended) | |
# action: executed on yes | |
# notaction: executed on no. | |
{ | |
#Variables | |
yes_lc="y" | |
question=$1" [nY] " | |
action=$2 | |
notaction=$3 | |
# Read single yes/no character | |
read -n 1 -p "$question" char | |
# Determine answer and executes action on yes (y or Y) or on nothing (newline) | |
# Also determines if need to add a newline (if entered single character, not newline) | |
nl="\n"; [ -z "$char" ] && nl="" || [ "${char,,}" == "y" ] && echo -ne "$nl" && eval "$action" || { echo -ne "$nl"; [ "$notaction" ] && eval "$notaction"; } | |
} |
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