Perform a substring search of formula names for \fItext\fR\. If \fItext\fR is surrounded with slashes, then it is interpreted as a regular expression\. The search for \fItext\fR is extended online to some popular taps\. If no search term is given, all locally available formulae are listed\.
For all installed or specific formulae, remove any older versions from the cellar\. By default, does not remove out\-of\-date keg\-only brews, as other software may link directly to specific versions\. In addition old downloads from the Homebrew download\-cache are deleted\.
If \fB\-s\fR is passed, scrubs the cache, removing downloads for even the latest versions of formula\. Note downloads for any installed formula will still not be deleted\. If you want to delete those too: \fBrm \-rf $(brew \-\-cache)\fR
Show Homebrew and system configuration useful for debugging\. If you file a bug report, you will likely be asked for this information if you do not provide it\.
Generate a formula for the downloadable file at \fIURL\fR and open it in the editor\. Homebrew will attempt to automatically derive the formula name and version, but if it fails, you\'ll have to make your own template\. The wget formula serves as a simple example\. For a complete cheat\-sheet, have a look at
If \fB\-\-autotools\fR is passed, create a basic template for an Autotools\-style build\. If \fB\-\-cmake\fR is passed, create a basic template for a CMake\-style build\.
The options \fB\-\-set\-name\fR and \fB\-\-set\-version\fR each take an argument and allow you to explicitly set the name and version of the package you are creating\.
Show dependencies for \fIformulae\fR\. When given multiple formula arguments, show the intersection of dependencies for \fIformulae\fR, except when passed \fB\-\-tree\fR, \fB\-\-all\fR, or \fB\-\-installed\fR\.
The options \fB\-\-name=<name>\fR and \fB\-\-version=<version>\fR each take an argument and allow you to explicitly set the name and version of the package you are installing\.
If \fB\-\-force\-bottle\fR is passed, download a bottle if it exists for the current version of OS X, even if it would not be used during installation\.
If \fB\-\-debug\fR is passed and brewing fails, open an interactive debugging session with access to IRB or a shell inside the temporary build directory\.
If \fB\-\-ignore\-dependencies\fR is passed, skip installing any dependencies of any kind\. If they are not already present, the formula will probably fail to install\.
If \fB\-\-cc=<compiler>\fR is passed, attempt to compile using \fIcompiler\fR\.\fIcompiler\fR should be the name of the compiler\'s executable, for instance \fBgcc\-4\.2\fR for Apple\'s GCC 4\.2, or \fBgcc\-4\.9\fR for a Homebrew\-provided GCC 4\.9\.
Download and patch \fIformula\fR, then open a shell\. This allows the user to run \fB\./configure \-\-help\fR and otherwise determine how to turn the software package into a Homebrew formula\.
Symlink all of \fIformula\fR\'s installed files into the Homebrew prefix\. This is done automatically when you install formula, but can be useful for DIY installations\.
If \fB\-\-dry\-run\fR or \fB\-n\fR is passed, Homebrew will list all files which would be linked or which would be deleted by \fBbrew link \-\-overwrite\fR, but will not actually link or delete any files\.
Find installed formulae that have compiled \fB\.app\fR\-style "application" packages for OS X, and symlink those apps into \fB/Applications\fR, allowing for easier access\.
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If no \fIformulae\fR are provided, all of them will have their \.apps symlinked\.
If provided, \fB\-\-local\fR will move them into the user\'s \fB~/Applications\fR folder instead of the system folder\. It may need to be created, first\.
If \fIformulae\fR are given, list the installed files for \fIformulae\fR\. Combined with \fB\-\-verbose\fR, recursively list the contents of all subdirectories in each \fIformula\fR\'s keg\.
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If \fB\-\-unbrewed\fR is passed, list all files in the Homebrew prefix not installed by Homebrew\.
If \fB\-\-versions\fR is passed, show the version number for installed formulae, or only the specified formulae if \fIformulae\fR are given\. With \fB\-\-multiple\fR, only show formulae with multiple versions installed\.
If \fB\-\-pinned\fR is passed, show the versions of pinned formulae, or only the specified (pinned) formulae if \fIformulae\fR are given\. See also \fBpin\fR, \fBunpin\fR\.
Pin the specified \fIformulae\fR, preventing them from being upgraded when issuing the \fBbrew upgrade\fR command without arguments\. See also \fBunpin\fR\.
Perform a substring search of formula names for \fItext\fR\. If \fItext\fR is surrounded with slashes, then it is interpreted as a regular expression\. The search for \fItext\fR is extended online to some popular taps\.
Instantiate a Homebrew build environment\. Uses our years\-battle\-hardened Homebrew build logic to help your \fB\./configure && make && make install\fR or even your \fBgem install\fR succeeed\. Especially handy if you run Homebrew in a Xcode\-only configuration since it adds tools like make to your PATH which otherwise build\-systems would not find\.
A few formulae provide a test method\.\fBbrew test <formula>\fR runs this test method\. There is no standard output or return code, but it should generally indicate to the user if something is wrong with the installed formula\.
To test the development or head version of a formula, use \fB\-\-devel\fR or \fB\-\-HEAD\fR\.
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If \fB\-\-debug\fR is passed and the test fails, an interactive debugger will be launched with access to IRB or a shell inside the temporary test directory\.
Remove symlinks for \fIformula\fR from the Homebrew prefix\. This can be useful for temporarily disabling a formula: \fBbrew unlink foo && commands && brew link foo\fR\.
Unpack the source files for \fIformulae\fR into subdirectories of the current working directory\. If \fB\-\-destdir=<path>\fR is given, the subdirectories will be created in the directory named by \fB<path>\fR instead\.
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If \fB\-\-patch\fR is passed, patches for \fIformulae\fR will be applied to the unpacked source\.
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If \fB\-\-git\fR is passed, a Git repository will be initalized in the unpacked source\. This is useful for creating patches for the software\.
Show the formulae that specify \fIformulae\fR as a dependency\. When given multiple formula arguments, show the intersection of formulae that use \fIformulae\fR\.
By default, \fBuses\fR shows usages of \fBformula\fR by stable builds\. To find cases where \fBformula\fR is used by development or HEAD build, pass \fB\-\-devel\fR or \fB\-\-HEAD\fR\.
Homebrew, like \fBgit\fR(1), supports external commands\. These are executable scripts that reside somewhere in the PATH, named \fBbrew\-<cmdname>\fR or \fBbrew\-<cmdname>\.rb\fR, which can be invoked like \fBbrew cmdname\fR\. This allows you to create your own commands without modifying Homebrew\'s internals\.
Instructions for creating your own commands can be found in the docs: \fIhttps://github\.com/Homebrew/homebrew/blob/master/share/doc/homebrew/External\-Commands\.md\fR
Sometimes a formula from a tapped repository may conflict with one in Homebrew/homebrew\. You can still access these formulae by using a special syntax, e\.g\.\fBhomebrew/dupes/vim\fR or \fBhomebrew/versions/node4\fR\.
Homebrew can install formulae via URL, e\.g\.\fBhttps://raw\.github\.com/Homebrew/homebrew/master/Library/Formula/git\.rb\fR\. The formula file will be cached for later use\.
When using the S3 download strategy, Homebrew will look in these variables for access credentials (see \fIhttp://docs\.aws\.amazon\.com/fws/1\.1/GettingStartedGuide/index\.html?AWSCredentials\.html\fR to retrieve these access credentials from AWS)\. If they are not set, the S3 download strategy will download with a public (unsigned) URL\.
When \fBbrew install \-d\fR or \fBbrew install \-i\fR drops into a shell, \fBHOMEBREW_DEBUG_INSTALL\fR will be set to the name of the formula being brewed\.
When \fBbrew install \-d\fR or \fBbrew install \-i\fR drops into a shell, \fBHOMEBREW_DEBUG_PREFIX\fR will be set to the target prefix in the Cellar of the formula being brewed\.
\fINOTE\fR: \fBbrew edit\fR will open all of Homebrew as discontinuous files and directories\. TextMate can handle this correctly in project mode, but many editors will do strange things in this case\.
A personal GitHub API Access token, which you can create at \fIhttps://github\.com/settings/applications\fR\. If set, GitHub will allow you a greater number of API requests\. See \fIhttp://developer\.github\.com/v3/#rate\-limiting\fR for more information\. Homebrew uses the GitHub API for features such as \fBbrew search\fR\.
When exporting from Subversion, Homebrew will use \fBHOMEBREW_SVN\fR if set, a Homebrew\-built Subversion if installed, or the system\-provided binary\.
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Set this to force Homebrew to use a particular svn binary\.
If set, instructs Homebrew to use \fBHOMEBREW_TEMP\fR as the temporary directory for building packages\. This may be needed if your system temp directory and Homebrew Prefix are on different volumes, as OS X has trouble moving symlinks across volumes when the target does not yet exist\.
Homebrew uses several commands for downloading files (e\.g\. curl, git, svn)\. Many of these tools can download via a proxy\. It\'s common for these tools to read proxy parameters from environment variables\.
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For the majority of cases setting \fBhttp_proxy\fR is enough\. You can set this in your shell profile, or you can use it before a brew command:
