摘要：
The “ -c ” option counts the number of occurrences of a string: even though ABC4.sh has no matches, it still counts them and returns zero: grep –c abc
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posted @ 2023-08-04 14:46
ZhangZhihuiAAA
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摘要：
Meta Characters and the grep Command The fundamental building blocks are the regular expressions that match a single character. Most characters, inclu
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posted @ 2023-08-04 13:49
ZhangZhihuiAAA
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