of leading context -A, --after-context=NUM print NUM lines of trailing context -C, --context=NUM print NUM lines of output context -NUM same as --context=NUM --group-separator=SEP use SEP as a group separator --
-A 是在匹配后打印指定的 N 行的选项,如下所示。 Syntax: grep -A"string" FILENAME 以下示例打印匹配的行及其后的 3 行。 $ grep -A 3 -i "example" demo_text Example to show the difference between WORD and word * 192.168.1.1 - single WORD * 192.168.1.1 - seven words. -B 是在匹配之前...
-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 - word consists of a sequence of letters, digits and underscores. Example to show the difference between WORD and word * 192.168.1.1 - single WORD * 192.168.1.1 - seven words. 6.1 显示匹配行之后的N行 -A 语法: grep -A "string" FILENAME 下例显示匹配行和之后的3行数据 $ grep -A ...
word - word consists of a sequence of letters, digits and underscores. Example to show the difference between WORD and word * 192.168.1.1 - single WORD * 192.168.1.1 - seven words. 6.1 显示匹配行之后的N行 -A 语法: grep -A "string" FILENAME ...
-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...
-w, --word-regexp Select only those linescontainingmatches that formwhole words. The test is that the matching substring must either be at the beginning of the line,orpreceded(在……之前) by anon-wordconstituent(成分) character. Similarly, it must be either at the end of the lineorfollowe...
--context=NUM print NUM lines of output context-NUM same as--context=NUM--group-separator=SEP use SEP as a group separator--no-group-separator use empty string as a group separator--color[=WHEN],--colour[=WHEN] use markers to highlight the matching strings;WHENis'always','never',or'...
word-wordconsistsofasequenceofletters,digitsandunderscores. ExampletoshowthedifferencebetweenWORDandword *192.168.1.1-singleWORD *192.168.1.1-sevenwords. 6.1 匹配后显示N行 -A 是选项,它打印匹配后指定的N行,如下所示。Syntax: grep-A<N>"string"FILENAME 下面的示例打印匹配的行以及其后的 3 行。$...
URL_parts(x)## gregexec() may match multiple times within a single string.pattern <-"([[:alpha:]]+)([[:digit:]]+)"s <-"Test: A1 BC23 DEF456"m <- gregexec(pattern, s) m regmatches(s, m)## Before gregexec() was implemented, one could emulate it by running## regexec() ...