# 递归匹配,但不包含链接文件,其中.表示当前目录。 grep"string"-R-n.#12.匹配字符串的前后的N行和M行 grep-n-B1"公众号"learn_grep.txt # 前一行 #6-博客:blog.weiyigeek.top #7:公众号:全栈工程师修炼指南 grep-n-A1"公众号"learn_grep.txt # 后一行 #...
string as a group separator --color[=WHEN], --colour[=WHEN] use markers to highlight the matching strings; WHEN is 'always', 'never', or 'auto' -U, --binary do not strip CR characters at EOL (MSDOS/Windows) -u, --unix-byte-offsets report offsets as if CRs were not there (...
The Backslash Character and Special Expressions The symbols \< and \> respectively match the empty string at the beginning and end of a word. The symbol \b matches the empty string at the edge of a word, and \B matches the empty string provided it's not at the edge of a word. The...
grep "string" "testfile" 命令也是在 testfile 文件中查找 "string" 字符串,即使用双引号把 testfile 括起来,也不代表是在 "testfile" 字符串中查找 "string" 字符串。 而grep "string" "This is a test string." 命令会执行报错,提示找不到名为 This is a test string. 的文件,它不是在 "This is...
-B,--before-context=NUM print NUM lines 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--no-group-separator use empty string as a...
grep可以在搜索过程中指定(include)或排除(exclude)某些文件。我们通过通配符来指定所include文件或exclude文件。 grep “main()” . -r --include *.{c,cpp} 注意,some{string1,string2,string3}会扩展成somestring1 somestring2 somestring3。 grep “main()” . -r --exclude “README” ...
❏ sub(regex, replacement_str, string):将正则表达式regex匹配到的第一处内容替换成replacment_str。 ❏ gsub(regex, replacement_str, string):和sub()类似。不过该函数会替换正则表达式regex匹配到的所有内容。 ❏ match(regex, string):检查正则表达式regex是否能够在字符串string中找到匹配。如果能够找到,返...
use empty string as a group separator --color[=WHEN], --colour[=WHEN] use markers to highlight the matching strings; WHEN is 'always', 'never', or 'auto' -U, --binary do not strip CR characters at EOL (MSDOS/Windows) -u, --unix-byte-offsets report ...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
grep “string” filename 例: linuxidc@linuxidc:~$ grep 'Ubuntu' linuxidc.txt 我的示例文件linuxidc.txt包含具有字符串“Ubuntu”的句子,您可以在上面的输出中看到该句子。 关键字和字符串在搜索结果中以彩色形式显示。 在多个文件中搜索字符串 如果您想从同一类型的所有文件中搜索包含您的文本字符串的句子,...