$ rg -no-heading -field-match-separator ' ' 'par' ip.txt pets.txt $ rg -field-match-separator ')' 'the' ip.txt You can use the -field-match-separator option to customize this separator. $ rg -NI -no-heading 'say' ip.txt search.txtīy default, : is used to separate prefixes like filename and line numbers. $ rg -N -no-heading 'say' ip.txt search.txt When output is redirected, -no-heading option will be automatically active. This will also remove the newline separation between multiple files. Use the -no-heading option to get filename prefix for each matching line. # filename prefix automatically added for multiple file arguments You can use -H to always show the prefix and -I to suppress it. $ rg -files-without-match 'to' ip.txt search.txtįilename prefix is automatically added for recursive search and multiple file arguments. But the -L option in ripgrep is used to follow links, so only the long option -files-without-match is available to get filenames when a match is not found. Similar to GNU grep, you can use -l or -files-with-matches to get filenames when a match is found. You can also use -count-matches instead of the -co combination. Unlike GNU grep, you don't have to use another command like wc. When -o is combined with -c, you'll get the total count of matches. $ rg -c -include-zero 'to' ip.txt search.txt You can add the -include-zero option to display files without matches as well. Unlike GNU grep, the -c will not display files that don't have a match. Here are some examples with output redirection: # saving output to a file $ printf 'apple\nbanana\ncherry' | rg -n 'an' $ printf 'apple\nbanana\ncherry' | rg 'an' You can override the default behavior by using -n to always add the line number prefix and -N to turn off the numbering. However, if the output is redirected or if the input is being read from stdin, this option won't be on by default. Line numberĪs mentioned earlier, line number prefix is enabled by default. The example_files directory has all the files used in the examples. Regular expressions will be covered in a later section. So, options like -F, -f, -i, -o, -v, -w, -x, -m, -q, -b, -A, -B and -C won't be discussed as they behave the same as GNU grep. As mentioned earlier, the focus will be on differences compared to GNU grep. This section will cover some of the options provided by ripgrep with examples. From command line, you can use man rg for the manual and rg -h for a list of all the options. It is always a good idea to know where to find the documentation. binary files (determined by the presence of the ASCII NUL character) are ignored, but a matching line is displayed if found before encountering the NUL character along with a warning Options overview.hidden files and directories are ignored.files and directories that match rules specified by ignore files like.Recursive search is on by default for directories provided as an argument (current directory if input source is not specified).Filename is added as a prefix line above the matching lines instead of a prefix for each matching line.Blank line separates matching lines from different files.Line number prefix and color options are enabled by default.to put it roughly, this provides more features compared to BRE/ERE but less compared to PCRE.Regular expressions flavor is provided by the regex crate.Here are some notable differences in behavior between ripgrep and GNU grep when they are invoked without any options: You can still access the earlier version from my work-in-progress Command line text processing with Rust tools ebook. This chapter will now cover only notable features and differences. That led to a lot of repetitive details that were very similar to GNU grep. # note that the installed command name is rg, not ripgrepĬommand line text processing with Rust toolsĮarlier versions of this book discussed ripgrep from the basics, just like GNU grep. # visit using the first part to get latest version # link shown here on two lines as it is too long Instructions shown below is for Debian-like distributions. See ripgrep: installation for details on various methods and platforms. See also benchmark among grep implementations. See Feature comparison of ack, ag, git-grep, GNU grep and ripgrep for an overview of features among various grep implementations. ripgrep doesn't aim to be compatible with POSIX or GNU grep and there are various differences in terms of features, option names, output style, regular expressions and so on. The major selling point is its default behavior for recursive search, parallel processing and speed. Editors like Visual Studio Code are using ripgrep to power their search and replace features. Ripgrep is a very popular alternative to the grep command.
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