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seahal/bash.sh

Created December 31, 2021 08:38
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bash.sh
#!/bin/bash
# "0" と "0" の比較をすると、0 という値が返ってくる
test "0" == "0"
echo $?
# "0" と "1" の比較をすると、1 という値が返ってくる
test "0" == "1"
echo $?
# それはすなわち、bash では 0 は true で 1 は false なのではないか？
for i in {'0','1'}; do
if test '0' == $i; then
echo "$? is true"
else
echo "$? is false"
fi
done
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