brew.1

.\" generated with Ronn/v0.7.3
.\" http://github.com/rtomayko/ronn/tree/0.7.3
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.TH "BREW" "1" "January 2014" "Homebrew" "brew"
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.SH "NAME"
\fBbrew\fR \- The missing package manager for OS X
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.SH "SYNOPSIS"
\fBbrew\fR \-\-version
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.br
\fBbrew\fR command [\-\-verbose|\-v] [options] [formula] \.\.\.
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.SH "DESCRIPTION"
Homebrew is the easiest and most flexible way to install the UNIX tools Apple didn\'t include with OS X\.
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.SH "ESSENTIAL COMMANDS"
For the full command list, see the COMMANDS section\.
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.P
With \fB\-\-verbose\fR or \fB\-v\fR, many commands print extra debugging information\. Note that these flags should only appear after a command\.
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.TP
\fBinstall\fR \fIformula\fR
Install \fIformula\fR\.
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.TP
\fBremove\fR \fIformula\fR
Uninstall \fIformula\fR\.
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.TP
\fBupdate\fR
Fetch the newest version of Homebrew from GitHub using \fBgit\fR(1)\.
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.TP
\fBlist\fR
List all installed formulae\.
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.TP
\fBsearch\fR \fItext\fR|/\fItext\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\. If no search term is given, all locally available formulae are listed\.
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.SH "COMMANDS"
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.TP
\fBaudit\fR [\fIformulae\fR]
Check \fIformulae\fR for Homebrew coding style violations\. This should be run before submitting a new formula\.
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.IP
If no \fIformulae\fR are provided, all of them are checked\.
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.IP
\fBaudit\fR exits with a non\-zero status if any errors are found\. This is useful, for instance, for implementing pre\-commit hooks\.
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.TP
\fBcat\fR \fIformula\fR
Display the source to \fIformula\fR\.
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.TP
\fBcleanup [\-\-force] [\-ns]\fR [\fIformulae\fR]
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\.
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.IP
If \fB\-\-force\fR is passed, remove out\-of\-date keg\-only brews as well\.
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.IP
If \fB\-n\fR is passed, show what would be removed, but do not actually remove anything\.
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.IP
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 $(brew \-\-cache)\fR
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.TP
\fBcommands\fR
Show a list of built\-in and external commands\.
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.TP
\fBcreate <URL> [\-\-autotools|\-\-cmake] [\-\-no\-fetch] [\-\-set\-name <name>] [\-\-set\-version <version>]\fR
Generate a formula for the downloadable file at \fIURL\fR and open it in the editor\. Homebrew will attempt to automatically derive the formula name and version, but if it fails, you\'ll have to make your own template\. The wget formula serves as a simple example\. For a complete cheat\-sheet, have a look at
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.IP
\fB$(brew \-\-repository)/Library/Contributions/example\-formula\.rb\fR
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.IP
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\.
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.IP
If \fB\-\-no\-fetch\fR is passed, Homebrew will not download \fIURL\fR to the cache and will thus not add the SHA\-1 to the formula for you\.
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.IP
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\.
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.TP
\fBdeps [\-\-1] [\-n] [\-\-tree] [\-\-all] [\-\-installed]\fR \fIformula\fR
Show \fIformula\fR\'s dependencies\.
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.IP
If \fB\-\-1\fR is passed, only show dependencies one level down, instead of recursing\.
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.IP
If \fB\-n\fR is passed, show dependencies in topological order\.
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.IP
If \fB\-\-tree\fR is passed, show dependencies as a tree\.
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.IP
If \fB\-\-all\fR is passed, show dependencies for all formulae\.
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.IP
If \fB\-\-installed\fR is passed, show dependencies for all installed formulae\.
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.TP
\fBdiy [\-\-set\-name <name>] [\-\-set\-version <version>]\fR
Automatically determine the installation prefix for non\-Homebrew software\.
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.IP
Using the output from this command, you can install your own software into the Cellar and then link it into Homebrew\'s prefix with \fBbrew link\fR\.
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.IP
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 installing\.
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.TP
\fBdoctor\fR
Check your system for potential problems\. Doctor exits with a non\-zero status if any problems are found\.
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.TP
\fBedit\fR
Open all of Homebrew for editing\.
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.TP
\fBedit\fR \fIformula\fR
Open \fIformula\fR in the editor\.
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.TP
\fBfetch [\-\-force] [\-v] [\-\-HEAD] [\-\-deps] [\-\-build\-from\-source]\fR \fIformulae\fR
Download the source packages for the given \fIformulae\fR\. For tarballs, also print SHA1 and SHA\-256 checksums\.
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.IP
If \fB\-\-HEAD\fR is passed, download the HEAD versions of \fIformulae\fR instead\. \fB\-v\fR may also be passed to make the VCS checkout verbose, useful for seeing if an existing HEAD cache has been updated\.
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.IP
If \fB\-\-force\fR is passed, remove a previously cached version and re\-fetch\.
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.IP
If \fB\-\-deps\fR is passed, also download dependencies for any listed \fIformulae\fR\.
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.IP
If \fB\-\-build\-from\-source\fR is passed, download the source rather than a bottle\.
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.TP
\fBhome\fR
Open Homebrew\'s own homepage in a browser\.
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.TP
\fBhome\fR \fIformula\fR
Open \fIformula\fR\'s homepage in a browser\.
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.TP
\fBinfo [\-\-all]\fR \fIformula\fR
Display information about \fIformula\fR\.
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.IP
If \fB\-\-all\fR is passed, show info for all formulae\.
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.TP
\fBinfo \-\-github\fR \fIformula\fR
Open a browser to the GitHub History page for formula \fIformula\fR\.
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.IP
To view formula history locally: \fBbrew log \-p <formula>\fR\.
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.TP
\fBinfo\fR \fIURL\fR
Print the name and version that will be detected for \fIURL\fR\.
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.TP
\fBinstall [\-\-debug] [\-\-env=<std|super>] [\-\-ignore\-dependencies] [\-\-only\-dependencies] [\-\-fresh] [\-\-cc=<compiler>] [\-\-build\-from\-source] [\-\-devel|\-\-HEAD]\fR \fIformula\fR
Install \fIformula\fR\.
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.IP
\fIformula\fR is usually the name of the formula to install, but it can be specified several different ways\. See \fISPECIFYING FORMULAE\fR\.
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.IP
If \fB\-\-debug\fR is passed and brewing fails, open an interactive debugging session with access to IRB, ruby\-debug, or a shell inside the temporary build directory\.
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.IP
If \fB\-\-env=std\fR is passed, use the standard build environment instead of superenv\.
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.IP
If \fB\-\-env=super\fR is passed, use superenv even if the formula specifies the standard build environment\.
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.IP
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\.
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.IP
If \fB\-\-only\-dependencies\fR is passed, install the dependencies with specified options but do not install the specified formula\.
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.IP
If \fB\-\-fresh\fR is passed, the installation process will not re\-use any options from previous installs\.
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.IP
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\.8\fR for a Homebrew\-provided GCC 4\.8\.
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.IP
If \fB\-\-build\-from\-source\fR is passed, compile from source even if a bottle is provided for \fIformula\fR\.
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.IP
If \fB\-\-devel\fR is passed, and \fIformula\fR defines it, install the development version\.
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.IP
If \fB\-\-HEAD\fR is passed, and \fIformula\fR defines it, install the HEAD version, aka master, trunk, unstable\.
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.IP
To install a newer version of HEAD use \fBbrew rm <foo> && brew install \-\-HEAD <foo>\fR\.
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.TP
\fBinstall \-\-interactive [\-\-git]\fR \fIformula\fR
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\.
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.IP
If \fB\-\-git\fR is passed, Homebrew will create a Git repository, useful for creating patches to the software\.
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.TP
\fBleaves\fR
Show installed formulae that are not dependencies of another installed formula\.
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.TP
\fBln\fR, \fBlink [\-\-overwrite] [\-\-dry\-run] [\-\-force]\fR \fIformula\fR
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\.
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.IP
If \fB\-\-overwrite\fR is passed, Homebrew will delete files which already exist in the prefix while linking\.
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.IP
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\.
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.IP
If \fB\-\-force\fR is passed, Homebrew will allow keg\-only formulae to be linked\.
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.TP
\fBlinkapps [\-\-local]\fR
Find all 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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.IP
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\.
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.TP
\fBls, list [\-\-unbrewed] [\-\-versions] [\-\-pinned]\fR [\fIformulae\fR]
Without any arguments, list all installed formulae\.
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.IP
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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.IP
If \fB\-\-unbrewed\fR is passed, list all files in the Homebrew prefix not installed by Homebrew\.
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.IP
If \fB\-\-versions\fR is passed, show the version number for installed formulae, or only the specified formulae if \fIformulae\fR are given\.
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.IP
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\.
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.TP
\fBlog [git\-log\-options]\fR \fIformula\fR \.\.\.
Show the git log for the given formulae\. Options that \fBgit\-log\fR(1) recognizes can be passed before the formula list\.
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.TP
\fBmissing\fR [\fIformulae\fR]
Check the given \fIformulae\fR for missing dependencies\.
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.IP
If no \fIformulae\fR are given, check all installed brews\.
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.TP
\fBoptions [\-\-compact] [\-\-all] [\-\-installed]\fR \fIformula\fR
Display install options specific to \fIformula\fR\.
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.IP
If \fB\-\-compact\fR is passed, show all options on a single line separated by spaces\.
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.IP
If \fB\-\-all\fR is passed, show options for all formulae\.
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.IP
If \fB\-\-installed\fR is passed, show options for all installed formulae\.
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.TP
\fBoutdated [\-\-quiet]\fR
Show formulae that have an updated version available\.
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.IP
If \fB\-\-quiet\fR is passed, list only the names of outdated brews\. Otherwise, the versions are printed as well\.
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.TP
\fBpin\fR \fIformulae\fR
Pin the specified \fIformulae\fR, preventing them from being upgraded when issuing the \fBbrew upgrade\fR command without arguments\. See also \fBunpin\fR\.
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.TP
\fBprune\fR
Remove dead symlinks from the Homebrew prefix\. This is generally not needed, but can be useful when doing DIY installations\.
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.TP
\fBreinstall\fR \fIformula\fR
Uninstall then install \fIformula\fR
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.TP
\fBrm\fR, \fBremove\fR, \fBuninstall [\-\-force]\fR \fIformula\fR
Uninstall \fIformula\fR\.
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.IP
If \fB\-\-force\fR is passed, and there are multiple versions of \fIformula\fR installed, delete all installed versions\.
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.TP
\fBsearch\fR, \fB\-S\fR
Display all locally available formulae for brewing (including tapped ones)\. No online search is performed if called without arguments\.
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.TP
\fBsearch\fR, \fB\-S\fR \fItap\fR
Display all formulae in a \fItap\fR, even if not yet tapped\. \fItap\fR is of the form \fIuser\fR/\fIrepo\fR, e\.g\. \fBbrew search homebrew/dupes\fR\.
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.TP
\fBsearch\fR, \fB\-S\fR [\fItap\fR] \fItext\fR|/\fItext\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\. If a \fItap\fR is specified, the search is restricted to it\.
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.TP
\fBsearch \-\-debian\fR|\fB\-\-fedora\fR|\fB\-\-fink\fR|\fB\-\-macports\fR|\fB\-\-opensuse\fR|\fB\-\-ubuntu\fR \fItext\fR
Search for \fItext\fR in the given package manager\'s list\.
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.TP
\fBsh [\-\-env=std]\fR
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\.
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.TP
\fBtap\fR [\fItap\fR]
Tap a new formula repository from GitHub, or list existing taps\.
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.IP
\fItap\fR is of the form \fIuser\fR/\fIrepo\fR, e\.g\. \fBbrew tap homebrew/dupes\fR\.
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.TP
\fBtap \-\-repair\fR:
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.IP
Ensures all tapped formula are symlinked into Library/Formula and prunes dead formula from Library/Formula\.
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.TP
\fBtest\fR \fIformula\fR
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\.
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.IP
Example: \fBbrew install jruby && brew test jruby\fR
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.TP
\fBunlink\fR \fIformula\fR
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\.
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.TP
\fBunlinkapps [\-\-local]\fR
Removes links created by \fBbrew linkapps\fR\.
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.TP
\fBunpin\fR \fIformulae\fR
Unpin \fIformulae\fR, allowing them to be upgraded by \fBbrew upgrade\fR\. See also \fBpin\fR\.
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.TP
\fBuntap\fR \fItap\fR
Remove a tapped repository\.
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.TP
\fBupdate [\-\-rebase]\fR
Fetch the newest version of Homebrew and all formulae from GitHub using \fBgit\fR(1)\.
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.IP
If \fB\-\-rebase\fR is specified then \fBgit pull \-\-rebase\fR is used\.
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.TP
\fBupgrade [install\-options]\fR [\fIformulae\fR]
Upgrade outdated, unpinned brews\.
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.IP
Options for the \fBinstall\fR command are also valid here\.
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.IP
If \fIformulae\fR are given, upgrade only the specified brews (but do so even if they are pinned; see \fBpin\fR, \fBunpin\fR)\.
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.TP
\fBuses [\-\-installed] [\-\-recursive] [\-\-devel|\-\-HEAD]\fR \fIformula\fR
Show the formulae that specify \fIformula\fR as a dependency\.
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.IP
Use \fB\-\-recursive\fR to resolve more than one level of dependencies\.
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.IP
If \fB\-\-installed\fR is passed, only list installed formulae\.
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.IP
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\.
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.TP
\fBversions [\-\-compact]\fR \fIformulae\fR
List previous versions of \fIformulae\fR, along with a command to checkout each version\.
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.IP
If \fB\-\-compact\fR is passed, show all options on a single line separated by spaces\.
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.TP
\fB\-\-cache\fR
Display Homebrew\'s download cache\. See also \fBHOMEBREW_CACHE\fR\.
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.TP
\fB\-\-cache\fR \fIformula\fR
Display the file or directory used to cache \fIformula\fR\.
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.TP
\fB\-\-cellar\fR
Display Homebrew\'s Cellar path\. \fIDefault:\fR \fB/usr/local/Cellar\fR
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.TP
\fB\-\-cellar\fR \fIformula\fR
Display the location in the cellar where \fIformula\fR would be installed, without any sort of versioned directory as the last path\.
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.TP
\fB\-\-config\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\.
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.TP
\fB\-\-env\fR
Show a summary of the Homebrew build environment\.
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.TP
\fB\-\-prefix\fR
Display Homebrew\'s install path\. \fIDefault:\fR \fB/usr/local\fR
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.TP
\fB\-\-prefix\fR \fIformula\fR
Display the location in the cellar where \fIformula\fR is or would be installed\.
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.TP
\fB\-\-repository\fR
Display where Homebrew\'s \fB\.git\fR directory is located\. For standard installs, the \fBprefix\fR and \fBrepository\fR are the same directory\.
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.TP
\fB\-\-version\fR
Print the version number of brew to standard error and exit\.
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.SH "EXTERNAL COMMANDS"
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\.
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.P
A number of (useful, but unsupported) external commands are included and enabled by default:
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.IP "" 4
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.nf

$ ls $(brew \-\-repository)/Library/Contributions/cmd
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.fi
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.IP "" 0
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.P
Documentation for the included external commands as well as instructions for creating your own can be found on the wiki: \fIhttp://wiki\.github\.com/Homebrew/homebrew/External\-Commands\fR
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.SH "SPECIFYING FORMULAE"
Many Homebrew commands accept one or more \fIformula\fR arguments\. These arguments can take several different forms:
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.TP
The name of a formula
e\.g\. \fBgit\fR, \fBnode\fR, \fBwget\fR\.
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.TP
The fully\-qualified name of a tapped formula
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\.
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.TP
An arbitrary URL
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\.
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.SH "ENVIRONMENT"
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.TP
AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY
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\.
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.TP
BROWSER
If set, and \fBHOMEBREW_BROWSER\fR is not, use \fBBROWSER\fR as the web browser when opening project homepages\.
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.TP
EDITOR
If set, and \fBHOMEBREW_EDITOR\fR and \fBVISUAL\fR are not, use \fBEDITOR\fR as the text editor\.
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.TP
GIT
When using Git, Homebrew will use \fBGIT\fR if set, a Homebrew\-built Git if installed, or the system\-provided binary\.
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.IP
Set this to force Homebrew to use a particular git binary\.
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.TP
HOMEBREW_BROWSER
If set, uses this setting as the browser when opening project homepages, instead of the OS default browser\.
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.TP
HOMEBREW_BUILD_FROM_SOURCE
If set, instructs Homebrew to compile from source even when a formula provides a bottle\.
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.TP
HOMEBREW_CACHE
If set, instructs Homebrew to use the given directory as the download cache\.
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.IP
\fIDefault:\fR \fB~/Library/Caches/Homebrew\fR if it exists; otherwise, \fB/Library/Caches/Homebrew\fR\.
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.TP
HOMEBREW_CURL_VERBOSE
If set, Homebrew will pass \fB\-\-verbose\fR when invoking \fBcurl\fR(1)\.
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.TP
HOMEBREW_DEBUG
If set, any commands that can emit debugging information will do so\.
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.TP
HOMEBREW_DEBUG_INSTALL
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\.
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.TP
HOMEBREW_DEBUG_PREFIX
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\.
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.TP
HOMEBREW_DEVELOPER
If set, Homebrew will print warnings that are only relevant to Homebrew developers (active or budding)\.
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.TP
HOMEBREW_EDITOR
If set, Homebrew will use this editor when editing a single formula, or several formulae in the same directory\.
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.IP
\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\.
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.TP
HOMEBREW_GITHUB_API_TOKEN
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\.
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.TP
HOMEBREW_KEEP_INFO
If set, Homebrew will not remove files from \fBshare/info\fR, allowing them to be linked from the Cellar\. To access these info files, prepend \fBshare/info\fR to your \fBINFOPATH\fR environment variable\.
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.IP
\fIExample:\fR \fBexport INFOPATH=\'/usr/local/share/info:/usr/share/info\'\fR
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.TP
HOMEBREW_MAKE_JOBS
If set, instructs Homebrew to use the value of \fBHOMEBREW_MAKE_JOBS\fR as the number of parallel jobs to run when building with \fBmake\fR(1)\.
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.IP
\fIDefault:\fR the number of available CPU cores\.
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.TP
HOMEBREW_NO_EMOJI
If set, Homebrew will not print the \fBHOMEBREW_INSTALL_BADGE\fR on a successful build\.
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.IP
\fINote:\fR Homebrew will only try to print emoji on Lion or newer\.
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.TP
HOMEBREW_NO_GITHUB_API
If set, Homebrew will not use the GitHub API for e\.g searches or fetching relevant issues on a failed install\.
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.TP
HOMEBREW_INSTALL_BADGE
Text printed before the installation summary of each successful build\. Defaults to the beer emoji\.
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.TP
HOMEBREW_SOURCEFORGE_MIRROR
If set, Homebrew will use the value of \fBHOMEBREW_SOURCEFORGE_MIRROR\fR to select a SourceForge mirror for downloading bottles\.
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.IP
\fIExample:\fR \fBexport HOMEBREW_SOURCEFORGE_MIRROR=\'heanet\'\fR
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.TP
HOMEBREW_SVN
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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.IP
Set this to force Homebrew to use a particular svn binary\.
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.TP
HOMEBREW_TEMP
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\.
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.IP
This issue typically occurs when using FileVault or custom SSD configurations\.
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.TP
HOMEBREW_VERBOSE
If set, Homebrew always assumes \fB\-\-verbose\fR when running commands\.
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.TP
VISUAL
If set, and \fBHOMEBREW_EDITOR\fR is not, use \fBVISUAL\fR as the text editor\.
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.SH "USING HOMEBREW BEHIND A PROXY"
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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.P
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:
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.IP "" 4
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.nf

http_proxy=http://<host>:<port> brew install foo
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.fi
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.IP "" 0
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.P
If your proxy requires authentication:
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.IP "" 4
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.nf

http_proxy=http://<user>:<password>@<host>:<port> brew install foo
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.fi
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.IP "" 0
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.SH "SEE ALSO"
Homebrew Wiki: \fIhttp://wiki\.github\.com/Homebrew/homebrew/\fR
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.P
\fBgit\fR(1), \fBgit\-log\fR(1)
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.SH "AUTHORS"
Max Howell, a splendid chap\.
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.SH "BUGS"
See Issues on GitHub: \fIhttp://github\.com/Homebrew/homebrew/issues\fR