This guide is intended to give an elementary description of ripgrep and an overview of its capabilities. This guide assumes that ripgrep is installed and that readers have passing familiarity with using command line tools. This also assumes a Unix-like system, although most commands are probably easily translatable to any command line shell environment.
- Basics
- Recursive search
- Automatic filtering
- Manual filtering: globs
- Manual filtering: file types
- Replacements
- Configuration file
- File encoding
- Binary data
- Common options
ripgrep is a command line tool that searches your files for patterns that you give it. ripgrep behaves as if reading each file line by line. If a line matches the pattern provided to ripgrep, then that line will be printed. If a line does not match the pattern, then the line is not printed.
The best way to see how this works is with an example. To show an example, we need something to search. Let's try searching ripgrep's source code. First grab a ripgrep source archive from https://github.com/BurntSushi/ripgrep/archive/0.7.1.zip and extract it:
$ curl -LO https://github.com/BurntSushi/ripgrep/archive/0.7.1.zip
$ unzip 0.7.1.zip
$ cd ripgrep-0.7.1
$ ls
benchsuite grep tests Cargo.toml LICENSE-MIT
ci ignore wincolor CHANGELOG.md README.md
complete pkg appveyor.yml compile snapcraft.yaml
doc src build.rs COPYING UNLICENSE
globset termcolor Cargo.lock HomebrewFormula
Let's try our first search by looking for all occurrences of the word fast
in README.md
:
$ rg fast README.md
75: faster than both. (N.B. It is not, strictly speaking, a "drop-in" replacement
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast while
119:### Is it really faster than everything else?
124:Summarizing, `ripgrep` is fast because:
129: optimizations to make searching very fast.
(Note: If you see an error message from ripgrep saying that it didn't
search any files, then re-run ripgrep with the --debug
flag. One likely cause
of this is that you have a *
rule in a $HOME/.gitignore
file.)
So what happened here? ripgrep read the contents of README.md
, and for each
line that contained fast
, ripgrep printed it to your terminal. ripgrep also
included the line number for each line by default. If your terminal supports
colors, then your output might actually look something like this screenshot:
In this example, we searched for something called a "literal" string. This
means that our pattern was just some normal text that we asked ripgrep to
find. But ripgrep supports the ability to specify patterns via regular
expressions. As an example,
what if we wanted to find all lines have a word that contains fast
followed
by some number of other letters?
$ rg 'fast\w+' README.md
75: faster than both. (N.B. It is not, strictly speaking, a "drop-in" replacement
119:### Is it really faster than everything else?
In this example, we used the pattern fast\w+
. This pattern tells ripgrep to
look for any lines containing the letters fast
followed by one or more
word-like characters. Namely, \w
matches characters that compose words (like
a
and L
but unlike .
and
). The +
after the \w
means, "match the
previous pattern one or more times." This means that the word fast
won't
match because there are no word characters following the final t
. But a word
like faster
will. faste
would also match!
Here's a different variation on this same theme:
$ rg 'fast\w*' README.md
75: faster than both. (N.B. It is not, strictly speaking, a "drop-in" replacement
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast while
119:### Is it really faster than everything else?
124:Summarizing, `ripgrep` is fast because:
129: optimizations to make searching very fast.
In this case, we used fast\w*
for our pattern instead of fast\w+
. The *
means that it should match zero or more times. In this case, ripgrep will
print the same lines as the pattern fast
, but if your terminal supports
colors, you'll notice that faster
will be highlighted instead of just the
fast
prefix.
It is beyond the scope of this guide to provide a full tutorial on regular expressions, but ripgrep's specific syntax is documented here: https://docs.rs/regex/0.2.5/regex/#syntax
In the previous section, we showed how to use ripgrep to search a single file. In this section, we'll show how to use ripgrep to search an entire directory of files. In fact, recursively searching your current working directory is the default mode of operation for ripgrep, which means doing this is very simple.
Using our unzipped archive of ripgrep source code, here's how to find all
function definitions whose name is write
:
$ rg 'fn write\('
src/printer.rs
469: fn write(&mut self, buf: &[u8]) {
termcolor/src/lib.rs
227: fn write(&mut self, b: &[u8]) -> io::Result<usize> {
250: fn write(&mut self, b: &[u8]) -> io::Result<usize> {
428: fn write(&mut self, b: &[u8]) -> io::Result<usize> { self.wtr.write(b) }
441: fn write(&mut self, b: &[u8]) -> io::Result<usize> { self.wtr.write(b) }
454: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
511: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
848: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
915: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
949: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
1114: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
1348: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
1353: fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
(Note: We escape the (
here because (
has special significance inside
regular expressions. You could also use rg -F 'fn write('
to achieve the
same thing, where -F
interprets your pattern as a literal string instead of
a regular expression.)
In this example, we didn't specify a file at all. Instead, ripgrep defaulted
to searching your current directory in the absence of a path. In general,
rg foo
is equivalent to rg foo ./
.
This particular search showed us results in both the src
and termcolor
directories. The src
directory is the core ripgrep code where as termcolor
is a dependency of ripgrep (and is used by other tools). What if we only wanted
to search core ripgrep code? Well, that's easy, just specify the directory you
want:
$ rg 'fn write\(' src
src/printer.rs
469: fn write(&mut self, buf: &[u8]) {
Here, ripgrep limited its search to the src
directory. Another way of doing
this search would be to cd
into the src
directory and simply use rg 'fn write\('
again.
After recursive search, ripgrep's most important feature is what it doesn't search. By default, when you search a directory, ripgrep will ignore all of the following:
- Files and directories that match the rules in your
.gitignore
glob pattern. - Hidden files and directories.
- Binary files. (ripgrep considers any file with a
NUL
byte to be binary.) - Symbolic links aren't followed.
All of these things can be toggled using various flags provided by ripgrep:
- You can disable
.gitignore
handling with the--no-ignore
flag. - Hidden files and directories can be searched with the
--hidden
flag. - Binary files can be searched via the
--text
(-a
for short) flag. Be careful with this flag! Binary files may emit control characters to your terminal, which might cause strange behavior. - ripgrep can follow symlinks with the
--follow
(-L
for short) flag.
As a special convenience, ripgrep also provides a flag called --unrestricted
(-u
for short). Repeated uses of this flag will cause ripgrep to disable
more and more of its filtering. That is, -u
will disable .gitignore
handling, -uu
will search hidden files and directories and -uuu
will search
binary files. This is useful when you're using ripgrep and you aren't sure
whether its filtering is hiding results from you. Tacking on a couple -u
flags is a quick way to find out. (Use the --debug
flag if you're still
perplexed, and if that doesn't help,
file an issue.)
ripgrep's .gitignore
handling actually goes a bit beyond just .gitignore
files. ripgrep will also respect repository specific rules found in
$GIT_DIR/info/exclude
, as well as any global ignore rules in your
core.excludesFile
(which is usually $XDG_CONFIG_HOME/git/ignore
on
Unix-like systems).
Sometimes you want to search files that are in your .gitignore
, so it is
possible to specify additional ignore rules or overrides in a .ignore
(application agnostic) or .rgignore
(ripgrep specific) file.
For example, let's say you have a .gitignore
file that looks like this:
log/
This generally means that any log
directory won't be tracked by git
.
However, perhaps it contains useful output that you'd like to include in your
searches, but you still don't want to track it in git
. You can achieve this
by creating a .ignore
file in the same directory as the .gitignore
file
with the following contents:
!log/
ripgrep treats .ignore
files with higher precedence than .gitignore
files
(and treats .rgignore
files with higher precedence than .ignore
files).
This means ripgrep will see the !log/
whitelist rule first and search that
directory.
Like .gitignore
, a .ignore
file can be placed in any directory. Its rules
will be processed with respect to the directory it resides in, just like
.gitignore
.
To process .gitignore
and .ignore
files case insensitively, use the flag
--ignore-file-case-insensitive
. This is especially useful on case insensitive
file systems like those on Windows and macOS. Note though that this can come
with a significant performance penalty, and is therefore disabled by default.
For a more in depth description of how glob patterns in a .gitignore
file
are interpreted, please see man gitignore
.
In the previous section, we talked about ripgrep's filtering that it does by
default. It is "automatic" because it reacts to your environment. That is, it
uses already existing .gitignore
files to produce more relevant search
results.
In addition to automatic filtering, ripgrep also provides more manual or ad hoc filtering. This comes in two varieties: additional glob patterns specified in your ripgrep commands and file type filtering. This section covers glob patterns while the next section covers file type filtering.
In our ripgrep source code (see Basics for instructions on how to
get a source archive to search), let's say we wanted to see which things depend
on clap
, our argument parser.
We could do this:
$ rg clap
[lots of results]
But this shows us many things, and we're only interested in where we wrote
clap
as a dependency. Instead, we could limit ourselves to TOML files, which
is how dependencies are communicated to Rust's build tool, Cargo:
$ rg clap -g '*.toml'
Cargo.toml
35:clap = "2.26"
51:clap = "2.26"
The -g '*.toml'
syntax says, "make sure every file searched matches this
glob pattern." Note that we put '*.toml'
in single quotes to prevent our
shell from expanding the *
.
If we wanted, we could tell ripgrep to search anything but *.toml
files:
$ rg clap -g '!*.toml'
[lots of results]
This will give you a lot of results again as above, but they won't include
files ending with .toml
. Note that the use of a !
here to mean "negation"
is a bit non-standard, but it was chosen to be consistent with how globs in
.gitignore
files are written. (Although, the meaning is reversed. In
.gitignore
files, a !
prefix means whitelist, and on the command line, a
!
means blacklist.)
Globs are interpreted in exactly the same way as .gitignore
patterns. That
is, later globs will override earlier globs. For example, the following command
will search only *.toml
files:
$ rg clap -g '!*.toml' -g '*.toml'
Interestingly, reversing the order of the globs in this case will match nothing, since the presence of at least one non-blacklist glob will institute a requirement that every file searched must match at least one glob. In this case, the blacklist glob takes precedence over the previous glob and prevents any file from being searched at all!
Over time, you might notice that you use the same glob patterns over and over. For example, you might find yourself doing a lot of searches where you only want to see results for Rust files:
$ rg 'fn run' -g '*.rs'
Instead of writing out the glob every time, you can use ripgrep's support for file types:
$ rg 'fn run' --type rust
or, more succinctly,
$ rg 'fn run' -trust
The way the --type
flag functions is simple. It acts as a name that is
assigned to one or more globs that match the relevant files. This lets you
write a single type that might encompass a broad range of file extensions. For
example, if you wanted to search C files, you'd have to check both C source
files and C header files:
$ rg 'int main' -g '*.{c,h}'
or you could just use the C file type:
$ rg 'int main' -tc
Just as you can write blacklist globs, you can blacklist file types too:
$ rg clap --type-not rust
or, more succinctly,
$ rg clap -Trust
That is, -t
means "include files of this type" where as -T
means "exclude
files of this type."
To see the globs that make up a type, run rg --type-list
:
$ rg --type-list | rg '^make:'
make: *.mak, *.mk, GNUmakefile, Gnumakefile, Makefile, gnumakefile, makefile
By default, ripgrep comes with a bunch of pre-defined types. Generally, these types correspond to well known public formats. But you can define your own types as well. For example, perhaps you frequently search "web" files, which consist of Javascript, HTML and CSS:
$ rg --type-add 'web:*.html' --type-add 'web:*.css' --type-add 'web:*.js' -tweb title
or, more succinctly,
$ rg --type-add 'web:*.{html,css,js}' -tweb title
The above command defines a new type, web
, corresponding to the glob
*.{html,css,js}
. It then applies the new filter with -tweb
and searches for
the pattern title
. If you ran
$ rg --type-add 'web:*.{html,css,js}' --type-list
Then you would see your web
type show up in the list, even though it is not
part of ripgrep's built-in types.
It is important to stress here that the --type-add
flag only applies to the
current command. It does not add a new file type and save it somewhere in a
persistent form. If you want a type to be available in every ripgrep command,
then you should either create a shell alias:
alias rg="rg --type-add 'web:*.{html,css,js}'"
or add --type-add=web:*.{html,css,js}
to your ripgrep configuration file.
(Configuration files are covered in more detail later.)
ripgrep provides a limited ability to modify its output by replacing matched
text with some other text. This is easiest to explain with an example. Remember
when we searched for the word fast
in ripgrep's README?
$ rg fast README.md
75: faster than both. (N.B. It is not, strictly speaking, a "drop-in" replacement
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast while
119:### Is it really faster than everything else?
124:Summarizing, `ripgrep` is fast because:
129: optimizations to make searching very fast.
What if we wanted to replace all occurrences of fast
with FAST
? That's
easy with ripgrep's --replace
flag:
$ rg fast README.md --replace FAST
75: FASTer than both. (N.B. It is not, strictly speaking, a "drop-in" replacement
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays FAST while
119:### Is it really FASTer than everything else?
124:Summarizing, `ripgrep` is FAST because:
129: optimizations to make searching very FAST.
or, more succinctly,
$ rg fast README.md -r FAST
[snip]
In essence, the --replace
flag applies only to the matching portion of text
in the output. If you instead wanted to replace an entire line of text, then
you need to include the entire line in your match. For example:
$ rg '^.*fast.*$' README.md -r FAST
75:FAST
88:FAST
119:FAST
124:FAST
129:FAST
Alternatively, you can combine the --only-matching
(or -o
for short) with
the --replace
flag to achieve the same result:
$ rg fast README.md --only-matching --replace FAST
75:FAST
88:FAST
119:FAST
124:FAST
129:FAST
or, more succinctly,
$ rg fast README.md -or FAST
[snip]
Finally, replacements can include capturing groups. For example, let's say
we wanted to find all occurrences of fast
followed by another word and
join them together with a dash. The pattern we might use for that is
fast\s+(\w+)
, which matches fast
, followed by any amount of whitespace,
followed by any number of "word" characters. We put the \w+
in a "capturing
group" (indicated by parentheses) so that we can reference it later in our
replacement string. For example:
$ rg 'fast\s+(\w+)' README.md -r 'fast-$1'
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast-while
124:Summarizing, `ripgrep` is fast-because:
Our replacement string here, fast-$1
, consists of fast-
followed by the
contents of the capturing group at index 1
. (Capturing groups actually start
at index 0, but the 0
th capturing group always corresponds to the entire
match. The capturing group at index 1
always corresponds to the first
explicit capturing group found in the regex pattern.)
Capturing groups can also be named, which is sometimes more convenient than using the indices. For example, the following command is equivalent to the above command:
$ rg 'fast\s+(?P<word>\w+)' README.md -r 'fast-$word'
88: color and full Unicode support. Unlike GNU grep, `ripgrep` stays fast-while
124:Summarizing, `ripgrep` is fast-because:
It is important to note that ripgrep will never modify your files. The
--replace
flag only controls ripgrep's output. (And there is no flag to let
you do a replacement in a file.)
It is possible that ripgrep's default options aren't suitable in every case. For that reason, and because shell aliases aren't always convenient, ripgrep supports configuration files.
Setting up a configuration file is simple. ripgrep will not look in any
predetermined directory for a config file automatically. Instead, you need to
set the RIPGREP_CONFIG_PATH
environment variable to the file path of your
config file. Once the environment variable is set, open the file and just type
in the flags you want set automatically. There are only two rules for
describing the format of the config file:
- Every line is a shell argument, after trimming whitespace.
- Lines starting with
#
(optionally preceded by any amount of whitespace) are ignored.
In particular, there is no escaping. Each line is given to ripgrep as a single command line argument verbatim.
Here's an example of a configuration file, which demonstrates some of the formatting peculiarities:
$ cat $HOME/.ripgreprc
# Don't let ripgrep vomit really long lines to my terminal, and show a preview.
--max-columns=150
--max-column-preview
# Add my 'web' type.
--type-add
web:*.{html,css,js}*
# Using glob patterns to include/exclude files or folders
--glob=!git/*
# or
--glob
!git/*
# Set the colors.
--colors=line:none
--colors=line:style:bold
# Because who cares about case!?
--smart-case
When we use a flag that has a value, we either put the flag and the value on
the same line but delimited by an =
sign (e.g., --max-columns=150
), or we
put the flag and the value on two different lines. This is because ripgrep's
argument parser knows to treat the single argument --max-columns=150
as a
flag with a value, but if we had written --max-columns 150
in our
configuration file, then ripgrep's argument parser wouldn't know what to do
with it.
Putting the flag and value on different lines is exactly equivalent and is a matter of style.
Comments are encouraged so that you remember what the config is doing. Empty lines are OK too.
So let's say you're using the above configuration file, but while you're at a
terminal, you really want to be able to see lines longer than 150 columns. What
do you do? Thankfully, all you need to do is pass --max-columns 0
(or -M0
for short) on the command line, which will override your configuration file's
setting. This works because ripgrep's configuration file is prepended to the
explicit arguments you give it on the command line. Since flags given later
override flags given earlier, everything works as expected. This works for most
other flags as well, and each flag's documentation states which other flags
override it.
If you're confused about what configuration file ripgrep is reading arguments
from, then running ripgrep with the --debug
flag should help clarify things.
The debug output should note what config file is being loaded and the arguments
that have been read from the configuration.
Finally, if you want to make absolutely sure that ripgrep isn't reading a
configuration file, then you can pass the --no-config
flag, which will always
prevent ripgrep from reading extraneous configuration from the environment,
regardless of what other methods of configuration are added to ripgrep in the
future.
Text encoding is a complex topic, but we can try to summarize its relevancy to ripgrep:
- Files are generally just a bundle of bytes. There is no reliable way to know their encoding.
- Either the encoding of the pattern must match the encoding of the files being searched, or a form of transcoding must be performed that converts either the pattern or the file to the same encoding as the other.
- ripgrep tends to work best on plain text files, and among plain text files, the most popular encodings likely consist of ASCII, latin1 or UTF-8. As a special exception, UTF-16 is prevalent in Windows environments
In light of the above, here is how ripgrep behaves when --encoding auto
is
given, which is the default:
- All input is assumed to be ASCII compatible (which means every byte that corresponds to an ASCII codepoint actually is an ASCII codepoint). This includes ASCII itself, latin1 and UTF-8.
- ripgrep works best with UTF-8. For example, ripgrep's regular expression
engine supports Unicode features. Namely, character classes like
\w
will match all word characters by Unicode's definition and.
will match any Unicode codepoint instead of any byte. These constructions assume UTF-8, so they simply won't match when they come across bytes in a file that aren't UTF-8. - To handle the UTF-16 case, ripgrep will do something called "BOM sniffing" by default. That is, the first three bytes of a file will be read, and if they correspond to a UTF-16 BOM, then ripgrep will transcode the contents of the file from UTF-16 to UTF-8, and then execute the search on the transcoded version of the file. (This incurs a performance penalty since transcoding is slower than regex searching.) If the file contains invalid UTF-16, then the Unicode replacement codepoint is substituted in place of invalid code units.
- To handle other cases, ripgrep provides a
-E/--encoding
flag, which permits you to specify an encoding from the Encoding Standard. ripgrep will assume all files searched are the encoding specified (unless the file has a BOM) and will perform a transcoding step just like in the UTF-16 case described above.
By default, ripgrep will not require its input be valid UTF-8. That is, ripgrep can and will search arbitrary bytes. The key here is that if you're searching content that isn't UTF-8, then the usefulness of your pattern will degrade. If you're searching bytes that aren't ASCII compatible, then it's likely the pattern won't find anything. With all that said, this mode of operation is important, because it lets you find ASCII or UTF-8 within files that are otherwise arbitrary bytes.
As a special case, the -E/--encoding
flag supports the value none
, which
will completely disable all encoding related logic, including BOM sniffing.
When -E/--encoding
is set to none
, ripgrep will search the raw bytes of
the underlying file with no transcoding step. For example, here's how you might
search the raw UTF-16 encoding of the string Шерлок
:
$ rg '(?-u)\(\x045\x04@\x04;\x04>\x04:\x04' -E none -a some-utf16-file
Of course, that's just an example meant to show how one can drop down into raw bytes. Namely, the simpler command works as you might expect automatically:
$ rg 'Шерлок' some-utf16-file
Finally, it is possible to disable ripgrep's Unicode support from within the
regular expression. For example, let's say you wanted .
to match any byte
rather than any Unicode codepoint. (You might want this while searching a
binary file, since .
by default will not match invalid UTF-8.) You could do
this by disabling Unicode via a regular expression flag:
$ rg '(?-u:.)'
This works for any part of the pattern. For example, the following will find any Unicode word character followed by any ASCII word character followed by another Unicode word character:
$ rg '\w(?-u:\w)\w'
In addition to skipping hidden files and files in your .gitignore
by default,
ripgrep also attempts to skip binary files. ripgrep does this by default
because binary files (like PDFs or images) are typically not things you want to
search when searching for regex matches. Moreover, if content in a binary file
did match, then it's possible for undesirable binary data to be printed to your
terminal and wreak havoc.
Unfortunately, unlike skipping hidden files and respecting your .gitignore
rules, a file cannot as easily be classified as binary. In order to figure out
whether a file is binary, the most effective heuristic that balances
correctness with performance is to simply look for NUL
bytes. At that point,
the determination is simple: a file is considered "binary" if and only if it
contains a NUL
byte somewhere in its contents.
The issue is that while most binary files will have a NUL
byte toward the
beginning of its contents, this is not necessarily true. The NUL
byte might
be the very last byte in a large file, but that file is still considered
binary. While this leads to a fair amount of complexity inside ripgrep's
implementation, it also results in some unintuitive user experiences.
At a high level, ripgrep operates in three different modes with respect to binary files:
- The default mode is to attempt to remove binary files from a search
completely. This is meant to mirror how ripgrep removes hidden files and
files in your
.gitignore
automatically. That is, as soon as a file is detected as binary, searching stops. If a match was already printed (because it was detected long before aNUL
byte), then ripgrep will print a warning message indicating that the search stopped prematurely. This default mode only applies to files searched by ripgrep as a result of recursive directory traversal, which is consistent with ripgrep's other automatic filtering. For example,rg foo .file
will search.file
even though it is hidden. Similarly,rg foo binary-file
searchbinary-file
in "binary" mode automatically. - Binary mode is similar to the default mode, except it will not always
stop searching after it sees a
NUL
byte. Namely, in this mode, ripgrep will continue searching a file that is known to be binary until the first of two conditions is met: 1) the end of the file has been reached or 2) a match is or has been seen. This means that in binary mode, if ripgrep reports no matches, then there are no matches in the file. When a match does occur, ripgrep prints a message similar to one it prints when in its default mode indicating that the search has stopped prematurely. This mode can be forcefully enabled for all files with the--binary
flag. The purpose of binary mode is to provide a way to discover matches in all files, but to avoid having binary data dumped into your terminal. - Text mode completely disables all binary detection and searches all files
as if they were text. This is useful when searching a file that is
predominantly text but contains a
NUL
byte, or if you are specifically trying to search binary data. This mode can be enabled with the-a/--text
flag. Note that when using this mode on very large binary files, it is possible for ripgrep to use a lot of memory.
Unfortunately, there is one additional complexity in ripgrep that can make it difficult to reason about binary files. That is, the way binary detection works depends on the way that ripgrep searches your files. Specifically:
- When ripgrep uses memory maps, then binary detection is only performed on the first few kilobytes of the file in addition to every matching line.
- When ripgrep doesn't use memory maps, then binary detection is performed on all bytes searched.
This means that whether a file is detected as binary or not can change based
on the internal search strategy used by ripgrep. If you prefer to keep
ripgrep's binary file detection consistent, then you can disable memory maps
via the --no-mmap
flag. (The cost will be a small performance regression when
searching very large files on some platforms.)
ripgrep has a lot of flags. Too many to keep in your head at once. This section is intended to give you a sampling of some of the most important and frequently used options that will likely impact how you use ripgrep on a regular basis.
-h
: Show ripgrep's condensed help output.--help
: Show ripgrep's longer form help output. (Nearly what you'd find in ripgrep's man page, so pipe it into a pager!)-i/--ignore-case
: When searching for a pattern, ignore case differences. That isrg -i fast
matchesfast
,fASt
,FAST
, etc.-S/--smart-case
: This is similar to--ignore-case
, but disables itself if the pattern contains any uppercase letters. Usually this flag is put into alias or a config file.-w/--word-regexp
: Require that all matches of the pattern be surrounded by word boundaries. That is, givenpattern
, the--word-regexp
flag will cause ripgrep to behave as ifpattern
were actually\b(?:pattern)\b
.-c/--count
: Report a count of total matched lines.--files
: Print the files that ripgrep would search, but don't actually search them.-a/--text
: Search binary files as if they were plain text.-z/--search-zip
: Search compressed files (gzip, bzip2, lzma, xz, lz4, brotli, zstd). This is disabled by default.-C/--context
: Show the lines surrounding a match.--sort path
: Force ripgrep to sort its output by file name. (This disables parallelism, so it might be slower.)-L/--follow
: Follow symbolic links while recursively searching.-M/--max-columns
: Limit the length of lines printed by ripgrep.--debug
: Shows ripgrep's debug output. This is useful for understanding why a particular file might be ignored from search, or what kinds of configuration ripgrep is loading from the environment.