52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
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#!/bin/bash
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# ======================================================================
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#
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# flags: -s, use strong confirmation, only yes or YES or Yes is accepted
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#
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# Parameters:
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# $@ - The confirmation message
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#
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# Examples:
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# > # Example 1
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# > # The preferred way to use confirm
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# > confirm Delete file1? && echo rm file1
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# > or
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# > [[ confirm Delete file1 ]]; then
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# > rm file1
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# > fi
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# >
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# > # Example 2
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# > # Use the $? variable to examine confirm's return value
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# > confirm Delete file2?
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# > if [ $? -eq 0 ]
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# > then
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# > echo Another file deleted
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# > fi
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# >
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# > # Example 3
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# > # Tell bash to exit right away if any command returns a non-zero code
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# > set -o errexit
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# > confirm Do you want to run the rest of the script?
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# > echo Here is the rest of the script
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#
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# ======================================================================
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function confirm()
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{
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local res="y Y yes YES Yes Sure sure SURE OK ok Ok"
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local strong="yes YES Yes"
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[[ $1 = "-s" ]] && { res=$strong; strong=true shift; } || strong=""
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echo -n "$@" "$([[ $strong ]] && echo \< $res \>) ? "
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read -e answer
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for response in $res
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do
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if [ "_$answer" == "_$response" ]
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then
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return 0
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fi
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done
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# Any answer other than the list above is considered a "no" answer
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return 1
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}
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