元字符 | 解释 | 示例 |
[a-z] | 匹配所有的小写字符 | grep [a-z] /etc/passwd |
[A-Z] | 匹配所有的大写字符 | grep [A-Z] /etc/passwd |
[a-Z] | 匹配所有字符 | grep [a-Z] /etc/passwd |
[0-9] | 匹配所有数字 | grep [0-9] /etc/passwd |
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Linux正则表达式2
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元字符 | 解释 | 示例 |
[a-z] | 匹配所有的小写字符 | grep [a-z] /etc/passwd |
[A-Z] | 匹配所有的大写字符 | grep [A-Z] /etc/passwd |
[a-Z] | 匹配所有字符 | grep [a-Z] /etc/passwd |
[0-9] | 匹配所有数字 | grep [0-9] /etc/passwd |
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