Read all files under each directory, recursively, following symbolic links only if they are on the command line. Note that if no file operand is given, grep searches the working directory. This is equivalent to the -d recurse option. 递归地读取每个目录下的所有文件,仅在符号链接位于命令行中时...
When searching recursively, skip any subdirectory whose base name matches GLOB. Ignore any redundant trailing slashes in GLOB. -I Process a binary file as if it did not contain matching data; this is equivalent to the --binary-files=without-match option. --include=GLOB Search only files ...
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 ...
and\Bmatches the empty string provided(假如,倘若) it's not at the edge of a word.如:'\bgrep\b'只匹配grep,意即单词grep前后都是空白,\b的b即blank。'
awk 是一个强大的文本处理工具，常用于数据提取和处理。它按行操作，允许用户指定匹配的模式，并对匹配...
-F, --fixed-strings Treat the pattern as a literal string instead of a regular expression. -i, --ignore-case Searches case insensitively. -L, --follow Follow symbolic links while traversing directories. -P, --pcre2 When this flag is present, rg will use the PCRE2 regex engine instead...
可以看到,当前目录下有一个 testfile 文件,它里面只有一行 "This is a test string." 字符串。 grep "string" testfile 命令会在 testfile 文件中查找 "string" 字符串,找到后打印出对应的行。 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...
Searching for a string in a file: grep “string” filename Case insensitive search: grep -i “string” filename Searching for files with grep command in Linux: ls |grep -i file Print line number: grep -n “string” filename Grep recursive search: grep -r “string” /path/to/directory...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
Surround the matching string with the marker find in GREP_COLOR environment variable. WHEN may be ‘never’, ‘always’, or ‘auto’ -c, --count Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invert-match option (see below), ...