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shell ""(ダブルクオーテーション)''(シングルクオーテーション)``(バッククオーテーション)
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# HOGE="pwd"として | |
echo "$HOGE" | |
#>> pwd | |
# 変数展開する | |
echo '$HOGE' | |
#>> $HOGE | |
# 変数展開しない | |
echo `pwd` | |
#>> /Users/whoami | |
# コマンドとして実行する |
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