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(translating by runningwater)
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Grep Count Lines If a String / Word Matches
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Grep 命令统计匹配的字符串/单词行数
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================================================================================
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How do I count lines if given word or string matches for each input file under Linux or UNIX operating systems?
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在 Linux 或 UNIX 操作系统下,对于给定的单词或字符串,我们应该怎么统计它们在每个输入文件中存在的行数呢?
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You need to pass the -c or --count option to suppress normal output. It will display a count of matching lines for each input file:
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您需要通过添加 -c 或者 --count 选项参数来抑制正常的输出。它将会显示对输入文件单词匹配的行数,如下示:
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$ grep -c vivek /etc/passwd
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OR
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或者
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$ grep -w -c vivek /etc/passwd
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Sample outputs:
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输出的示例:
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1
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However, with the -v or --invert-match option it will count non-matching lines, enter:
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相反的,使用 -v 或者 --invert 选项参数可以统计出不匹配的输入文件行数,键入:
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$ grep -c vivek /etc/passwd
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Sample outputs:
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输出的示例:
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45
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