grep searches the named input FILEs for lines containing a match to the given PATTERN. If no files are specified, or if the file “-” is given, grep searches standard input. By default, grep prints the matching
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 group separator --color[...
If we are looking at some texts upper and lower lines we can provide the count of lines to be shown. It will show the surrounding lines too. We will use-nCoption with the number of neighbor lines we want to list or show. In the following example, we want to show a single line aro...
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...
--exclude=GLOB Skip any command-line file with a name suffix that matches the pattern GLOB, using wildcard matching; a name suffix is either the whole name, or a trailing part that starts with a non-slash character immediately after a slash (/) in the name. When searching recursively, ...
control: -m, --max-count=NUM stop after NUM matches -b, --byte-offset print the byte offset with output lines -n, --line-number print line number with output lines --line-buffered flush output on every line -H, --with-filename print the file name for...
For example, to display all the lines containing the string bash from the /etc/passwd file, you would run the following command: 例如,要显示/etc/passwd 文件中包含字符串 bash 的所有行,可以运行以下命令: 代码语言:javascript 复制 grep bash/etc/passwd ...
-C NUM, -NUM, --context=NUM Print NUM lines of output context. Places a line containing a group separator (--) between contiguous groups of matches. With the-oor--only-matchingoption, this hasno effectand a warning is given. 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。
To search for patterns ending with a specific character, we use the dollar sign ($) to denote the end of the string. See the example below where we search for strings ending withhat: To print all lines that containhatregardless of its position, whether at the beginning of the line or ...
--byte-offset print the byte offset with output lines -n, --line-number print line number with output lines --line-buffered flush output on every line -H, --with-filename print the file name for each match -h, --no-filename suppress the file name prefix on output --label=LABEL use...