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Shell 编程/eval 命令
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Shell 编程
eval 命令类似于 shell 脚本中的额外 $.它评估字符串并尝试将其扩展为变量。例如,以下内容将字符串评估为 $horse 并展开变量 horse 的值。
eval $"horse"
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书本:Shell 编程
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