-H或--speed-large-files:比较大文件时,可加快速度; -l<字符或字符串>或--ignore-matching-lines<字符或字符串>:若两个文件在某几行有所不同,而这几行同时都包含了选项中指定的字符或字符串,则不显示这两个文件的差异; -i或--ignore-case:不检查大小写的不同; -l或——paginate:将结果交由p
-R –Recursively search subdirectories -c –Print only a count of matching lines -v –Invert match, print non-matching linesgrep allows you to search files and output for keywords or patterns quickly. It’s invaluable for parsing logs, searching source code, matching regexes, and extracting da...
-c,--countprint only a count of matching lines per FILE -T, --initial-tabmaketabs line up(if needed)-Z,--nullprint0byte after FILE name Context control: -B, --before-context=NUM print NUM lines of leading context -A, --after-context=NUM print NUM lines of trailing context -C,--...
-c, --count print only a count of matching lines per FILE -T, --initial-tab make tabs line up (if needed) -Z, --null print 0 byte after FILE name Context control: -B, --before-context=NUM print NUM lines of leading context -A, --after-context=NUM print NUM lines of trailing ...
-c 或--count:计算符合样式【查找的字符】的列数。-C<显示行数>或--context=<显示行数>或-<显示行数>:除了显示符合样式的那一行之外,并显示该行之前后的内容。-d<动作>或--directories=<动作>:当指定要查找的是目录而非文件时,必须使用这项参数,否则grep指令将回报信息并停止动作。-e<范本样式>或--reg...
When the -c or --count option is also used, grep does not output a count greater than NUM. When the -v or --invert-match option is also used, grep stops after outputting NUM non-matching lines. -o, --only-matching Print only the matched (non-empty) parts of a matching line,...
-l<字符或字符串>或–ignore-matching-lines<字符或字符串> 若两个文件在某几行有所不同,而这几行同时都包含了选项中指定的字符或字符串,则不显示这两个文件的差异。 -i或–ignore-case 不检查大小写的不同。 -l或–paginate 将结果交由pr程序来分页。
- Search only lines that match entirely in files: fgrep -x path/to/file1 path/to/file2 - 【重要】Count the number of lines that match the given string in a file: fgrep -c search_string path/to/file - Show the line number in the file along with the line matched: ...
grep命令的全称是"Globally search for a regular expression and print matching lines" 从中可以看到grep命令几个特点:1)globel 全文件搜索。这是因为在Unix、Unix-like系统中为了要彻底搜索一个文件,有的用户在要搜索的字符串前加上前缀 global。2)regular expression 正则表达式匹配。3)matching lines 按行匹配。
Output control:-m, --max-count=NUM stop after NUM selected lines-b, --byte-offset print thebyteoffset with output lines-n, --line-number print line number with output lines--line-buffered flush output on every line-H, --with-filename print file name with output lines-h, --no-filena...