-w, --word-regexp Select only those lines containing matches that form whole words. The test is that the matching substring must either be at the beginning of the line, or preceded by a non-word constituent character. Similarly, it must be either at the end of the line or followed by ...
Word-constituent characters are letters, digits, and the underscore. This option has no effect if -x is also specified. -x, --line-regexp Select only those matches that exactly match the whole line. For a regular expression pattern, this is like parenthesizing the pattern and then ...
By default, TYPE is binary, and grep normally outputs either a one-line message saying that a binary file matches, or no message if there is no match. If TYPE is without-match, grep assumes that a binary file does not match; this is equivalent to the -I option. If TYPE is text, g...
匹配整个单词(Match Whole Word) By default given search term or string is looked partially or on whole words. If we need to match whole word which is surrounded by white spaces we should put white spaces around the search term. We will search case search term as a whole word. 默认情况下...
-w, --word-regexp force PATTERN to match only whole words (、 摘要:缺陷是这个只要匹配(file1字符串包含file2)就行,而不是全部相等 例子:file1: 1 ww 2 mm 3 df 4 df 5 sf 6 as 7 jk 8 mk a kl b lk c kk d ll file2:
--no-ignore-casedonot ignorecasedistinctions(default)-w, --word-regexp match only whole words -x, --line-regexp match only whole lines -z, --null-data a data line ends in0byte, not newline Miscellaneous: -s, --no-messages suppress error messages ...
反向匹配:invert match shell grep -v word greptxt.txt 123 匹配找不到指定单词的行 -w 单词正则表达式:word regexp shell grep -w word greptxt.txt whole word word abc abc word abc word*abc asd word* 匹配完整的单词,单词理解为:行首、行尾或行中,前后都不是单词字符(即字符、数字、下划线)...
grep用户指南说明书
-w, --word-regexp force PATTERN to match only whole words -x, --line-regexp force PATTERN to match only whole lines -z, --null-data a data line endsin0byte, not newline Miscellaneous: -s, --no-messages suppress error messages ...
37: Fourth match Improved-woption The-woption, which tells ack to only find whole-word matches, did not always work if your pattern began or ended with puncutation. ack would make guesses as to what your intent was, but it was not well-defined. Now, ack disallows regexes that begin ...