if a command-line -r is given, - otherwise. If fewer than two FILEs are given, assume -h. Exit status is 0 if any line is selected, 1 otherwise; if any error occurs and -q is not given, the exit status is 2. 三、
The grep command allows you to search for a specific text string in a single or multiple file. This tutorial introduces this command and explains the options and patterns it supports to customize the text search and extraction process. What is grep commnand? The grep is a pre-installed comma...
This is equivalent to the -r option. --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 (/) ...
--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...
--help Print a usage message briefly summarizing these command-line options and the bug-reporting address, then exit. -V, --version Print the version number of grep to the standard output stream. This version number should be included in all bug reports (see below). ...
grep [-acinv] [--color=auto] 'string to search' filename -a : 将二进制文件以 text 文件的方式搜索数据 -c : 计算找到的字符串的次数 -i : 忽略大小写的不同 -n : 输出行号 -v : 反向选择,即输出没有 「字符串」 的内容 --color=auto : 将找到的关键词部分加上颜色 示例 代码语言:javascri...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
Today, you will learn to use the grep command with advanced examples. Searching for String To perform the search operation, I have created a sample file with the name“file.txt”.Below is the content inside that file. Hello, TRENDOCEANS! Reader ...
Notice the use of quotes in the above command. Quotes are not usually essential, but in this example they are essential because the name contains a space. Double quotes could also have been used in this example. Regular Expressions grep can search for complicated patterns to find what you nee...
Search for PATTERN in each FILE or standard input. PATTERN is, by default, a basic regular expression (BRE). Example: grep -i 'hello world' menu.h main.c Regexp selection and interpretation: -E, --extended-regexp PATTERN is an extended regular expression (ERE) ...