diff 命令输出分析

diff 命令输出分析
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diff 打印信息

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diff 命令输出分析
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diff 分析

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diff 命令输出分析

diff -u

解析 -1,6 +1,7
意思是 file 1 (前面有说明) 的 1 到 6行
意思是 file 2(前面有说明) 的 1 到 7行
进行比较说明