grepWith Multiple Strings To use multiple phrases, separated by newlines, to capture relevant matches in a file or text stream from a program, you can use the-F/--fixed-stringsto specify them. You can pass in a string shown below instead for a small number of matches, with a dollar sig...
Excluding words To exclude particular words or lines, use the-invert-matchoption. Usegrep -vas a shorter alternative. Exclude multiple words with grep by adding-Eand use a pipe (|) to define the specific words. Optionally make it case insensitive with the-ias listed above. grep -i -v -E...
Find multiple strings You can also use grep to find multiple words or strings. You can specify multiple patterns by using the -e switch. Let’s try searching a text document for two different strings: $ grep -e 'Class 1' -e Todd Students.txt Notice that we only needed to use quotes ...
Examples of Using Grep for Multiple Strings, Patterns and Words To make sure you understand how to use grep to search multiple strings, we suggestcreating a filewith some text on which we are going to try out a couple of different use cases. In our case, we named the filesample.txtand ...
How to use a grep search to search for a specific string within multiple directories? Lets say I have a massive directory which is filled with other directories all filled with different c++ scripts and I want a listing of all the scripts that contain the string: "this string". Is there ...
user@linux:~$catfile.txt|grepword word words sword 如果你希望grep仅打印完全匹配的短语(即,它们周围有空格并且不是其他单词的子字符串),你可以使用-w/--word-regexp标志来启用整体词匹配。 如果短语显示为单行,你可以使用相同的想法来匹配短语,使用-x/--line-regexp。
If this option is used multiple times or is combined with the -f (--file) option, search for all patterns given. This option can be used to protect a pattern beginning with “-”. -f FILE, --file=FILE Obtain patterns from FILE, one per line. If this option is used multiple ...
grep - print lines matching a patterngrep [OPTIONS] PATTERN [FILE...] grep [OPTIONS] [-e PATTERN | -f FILE] [FILE...]
A regular expression is a search pattern that the grep command matches in specified file or in specified location. A pattern can be any text string such as single character, multiple characters, single word, multiple words or a sentence. It is also known as pattern search, pattern matching,...
Combine bracket expressions with anchor matching to find all words starting with capital letters: grep ^[A-Z] .bashrc Bracket expressions allow multiple ranges. For example, match all non-letter characters with: grep [^a-zA-Z] .bashrc