BUNDLE-INSTALL(1)					     BUNDLE-INSTALL(1)



1mNAME0m
       1mbundle-install 22m- Install the dependencies specified in your Gemfile

1mSYNOPSIS0m
       1mbundle   install   22m[--binstubs[=DIRECTORY]]   [--clean]  [--full-index]
       [--gemfile=GEMFILE] [--jobs=NUMBER] [--local] [--deployment]  [--force]
       [--frozen] [--no-cache] [--no-prune] [--path PATH] [--system] [--quiet]
       [--retry=NUMBER]    [--shebang]	  [--standalone[=GROUP[    GROUP...]]]
       [--trust-policy=POLICY]	 [--without=GROUP[  GROUP...]]	[--with=GROUP[
       GROUP...]]

1mDESCRIPTION0m
       Install the gems specified in your Gemfile(5). If  this	is  the  first
       time  you  run  bundle  install	(and  a  1mGemfile.lock 22mdoes not exist),
       Bundler will fetch all remote sources, resolve dependencies and install
       all needed gems.

       If a 1mGemfile.lock 22mdoes exist, and you have not updated your Gemfile(5),
       Bundler will fetch all remote sources, but use the dependencies	speci-
       fied in the 1mGemfile.lock 22minstead of resolving dependencies.

       If  a  1mGemfile.lock  22mdoes  exist, and you have updated your Gemfile(5),
       Bundler will use the dependencies in the 1mGemfile.lock 22mfor all gems that
       you  did  not update, but will re-resolve the dependencies of gems that
       you did update. You can find more information about this update process
       below under 4mCONSERVATIVE24m 4mUPDATING24m.

1mOPTIONS0m
       To  apply  any  of 1m--deployment22m, 1m--path22m, 1m--binstubs22m, or 1m--without 22mevery
       time 1mbundle install 22mis run, use 1mbundle config 22m(see bundle-config(1)).

       1m--binstubs[=<directory>]0m
	      Creates a directory (defaults to 1m~/bin22m) and place  any  executa-
	      bles from the gem there. These executables run in Bundler's con-
	      text. If used, you might add this  directory  to	your  environ-
	      ment's  1mPATH 22mvariable. For instance, if the 1mrails 22mgem comes with
	      a 1mrails 22mexecutable, this flag will create a 1mbin/rails 22mexecutable
	      that  ensures  that  all	referred dependencies will be resolved
	      using the bundled gems.

       1m--clean0m
	      On finishing the installation Bundler is	going  to  remove  any
	      gems  not  present  in the current Gemfile(5). Don't worry, gems
	      currently in use will not be removed.

       1m--full-index0m
	      Bundler will not call Rubygems' API endpoint (default) but down-
	      load and cache a (currently big) index file of all gems. Perfor-
	      mance can be improved for large bundles that seldomly change  by
	      enabling this option.

       1m--gemfile=<gemfile>0m
	      The  location  of  the Gemfile(5) which Bundler should use. This
	      defaults to a Gemfile(5) in the current  working	directory.  In
	      general, Bundler will assume that the location of the Gemfile(5)
	      is also the project's root and will try to find 1mGemfile.lock 22mand
	      1mvendor/cache 22mrelative to this location.

       1m--jobs=[<number>]0m
	      The  maximum  number  of parallel download and install jobs. The
	      default is 1m122m.

       1m--local0m
	      Do not attempt to connect to 1mrubygems.org22m. Instead, Bundler will
	      use  the	gems  already  present	in  Rubygems' cache or in 1mven-0m
	      1mdor/cache22m. Note that  if  a	appropriate  platform-specific	gem
	      exists on 1mrubygems.org 22mit will not be found.

       1m--deployment0m
	      In  4mdeployment24m 4mmode24m, Bundler will 'roll-out' the bundle for pro-
	      duction or CI use. Please check carefully if you	want  to  have
	      this option enabled in your development environment.

       1m--force0m
	      Force  download  every  gem,  even  if the required versions are
	      already available locally.

       1m--frozen0m
	      Do not allow the Gemfile.lock to be updated after this  install.
	      Exits  non-zero  if  there  are  going to be changes to the Gem-
	      file.lock.

       1m--system0m
	      Installs the gems  specified  in	the  bundle  to  the  system's
	      Rubygems	location. This overrides any previous configuration of
	      1m--path22m.

       1m--no-cache0m
	      Do not update the cache in 1mvendor/cache 22mwith the  newly  bundled
	      gems.  This  does not remove any gems in the cache but keeps the
	      newly bundled gems from being cached during the install.

       1m--no-prune0m
	      Don't remove stale gems from the	cache  when  the  installation
	      finishes.

       1m--path=<path>0m
	      The  location to install the specified gems to. This defaults to
	      Rubygems' setting. Bundler shares this location  with  Rubygems,
	      1mgem  install  ... 22mwill have gem installed there, too. Therefore,
	      gems installed without a 1m--path ...  22msetting  will  show  up  by
	      calling 1mgem list22m. Accordingly, gems installed to other locations
	      will not get listed.

       1m--quiet0m
	      Do not  print  progress  information  to	the  standard  output.
	      Instead, Bundler will exit using a status code (1m$?22m).

       1m--retry=[<number>]0m
	      Retry failed network or git requests for 4mnumber24m times.

       1m--shebang=<ruby-executable>0m
	      Uses the specified ruby executable (usually 1mruby22m) to execute the
	      scripts created with 1m--binstubs22m. In addition, if you use  1m--bin-0m
	      1mstubs  22mtogether  with  1m--shebang jruby 22mthese executables will be
	      changed to execute 1mjruby 22minstead.

       1m--standalone[=<list>]0m
	      Makes a bundle that can work without depending  on  Rubygems  or
	      Bundler  at runtime. A space separated list of groups to install
	      has to be specified. Bundler creates a  directory  named	1mbundle0m
	      and  installs  the  bundle  there.  It  also  generates  a  1mbun-0m
	      1mdle/bundler/setup.rb 22mfile to replace Bundler's own setup in	the
	      manner  required.  Using this option implicitly sets 1mpath22m, which
	      is a [remembered option][REMEMBERED OPTIONS].

       1m--trust-policy=[<policy>]0m
	      Apply the Rubygems security policy 4mpolicy24m, where policy  is	one
	      of  1mHighSecurity22m, 1mMediumSecurity22m, 1mLowSecurity22m, 1mAlmostNoSecurity22m,
	      or 1mNoSecurity22m. For more details, please see the Rubygems signing
	      documentation linked below in 4mSEE24m 4mALSO24m.

       1m--without=<list>0m
	      A space-separated list of groups referencing gems to skip during
	      installation. If a group is given that is in the remembered list
	      of groups given to --with, it is removed from that list.

       1m--with=<list>0m
	      A space-separated list of groups referencing gems to install. If
	      an optional group is given it is installed. If a group is  given
	      that  is in the remembered list of groups given to --without, it
	      is removed from that list.

1mDEPLOYMENT MODE0m
       Bundler's defaults are optimized for development. To switch to defaults
       optimized  for deployment and for CI, use the 1m--deployment 22mflag. Do not
       activate deployment mode on development machines, as it will  cause  an
       error when the Gemfile(5) is modified.

       1.  A 1mGemfile.lock 22mis required.

	   To ensure that the same versions of the gems you developed with and
	   tested with	are  also  used  in  deployments,  a  1mGemfile.lock  22mis
	   required.

	   This  is  mainly  to  ensure  that  you remember to check your 1mGem-0m
	   1mfile.lock 22minto version control.

       2.  The 1mGemfile.lock 22mmust be up to date

	   In development, you can modify your Gemfile(5)  and	re-run	1mbundle0m
	   1minstall 22mto 4mconservatively24m 4mupdate24m your 1mGemfile.lock 22msnapshot.

	   In  deployment, your 1mGemfile.lock 22mshould be up-to-date with changes
	   made in your Gemfile(5).

       3.  Gems are installed to 1mvendor/bundle 22mnot your default  system  loca-
	   tion

	   In  development,  it's  convenient  to  share the gems used in your
	   application with other applications and other scripts that  run  on
	   the system.

	   In  deployment, isolation is a more important default. In addition,
	   the user deploying the  application	may  not  have	permission  to
	   install  gems to the system, or the web server may not have permis-
	   sion to read them.

	   As a result, 1mbundle install --deployment 22minstalls gems to the  1mven-0m
	   1mdor/bundle  22mdirectory  in  the	application. This may be overridden
	   using the 1m--path 22moption.



1mSUDO USAGE0m
       By default, Bundler installs gems to the same location as 1mgem install22m.

       In some cases, that location may not be writable by your Unix user.  In
       that case, Bundler will stage everything in a temporary directory, then
       ask you for your 1msudo 22mpassword in order to copy  the  gems	into  their
       system location.

       From  your  perspective,  this  is  identical  to  installing  the gems
       directly into the system.

       You should never use 1msudo bundle install22m. This is because several other
       steps in 1mbundle install 22mmust be performed as the current user:

       o   Updating your 1mGemfile.lock0m

       o   Updating your 1mvendor/cache22m, if necessary

       o   Checking out private git repositories using your user's SSH keys



       Of  these  three,  the  first  two  could theoretically be performed by
       1mchown22ming the resulting files to 1m$SUDO_USER22m.  The  third,  however,  can
       only  be  performed  by	invoking  the 1mgit 22mcommand as the current user.
       Therefore, git gems are downloaded and installed into 1m~/.bundle  22mrather
       than $GEM_HOME or $BUNDLE_PATH.

       As  a  result,  you  should run 1mbundle install 22mas the current user, and
       Bundler will ask for your password if it is needed to put the gems into
       their final location.

1mINSTALLING GROUPS0m
       By  default, 1mbundle install 22mwill install all gems in all groups in your
       Gemfile(5), except those declared for a different platform.

       However, you can explicitly tell Bundler  to  skip  installing  certain
       groups  with  the 1m--without 22moption. This option takes a space-separated
       list of groups.

       While the 1m--without 22moption will skip 4minstalling24m the gems in the  speci-
       fied  groups, it will still 4mdownload24m those gems and use them to resolve
       the dependencies of every gem in your Gemfile(5).

       This is so that installing a different set of groups on another machine
       (such  as  a  production  server) will not change the gems and versions
       that you have already developed and tested against.

       1mBundler offers a rock-solid guarantee that the third-party code you are0m
       1mrunning in development and testing is also the third-party code you are0m
       1mrunning in production. You can choose to exclude some of that	code  in0m
       1mdifferent  environments,  but	you  will never be caught flat-footed by0m
       1mdifferent versions of third-party code being used in different environ-0m
       1mments.0m

       For a simple illustration, consider the following Gemfile(5):



	   source 'https://rubygems.org'

	   gem 'sinatra'

	   group :production do
	     gem 'rack-perftools-profiler'
	   end



       In  this  case,	1msinatra 22mdepends on any version of Rack (1m>= 1.022m), while
       1mrack-perftools-profiler 22mdepends on 1.x (1m~> 1.022m).

       When you run 1mbundle install --without	production  22min  development,  we
       look  at the dependencies of 1mrack-perftools-profiler 22mas well. That way,
       you do not spend all your time developing against Rack 2.0,  using  new
       APIs  unavailable  in Rack 1.x, only to have Bundler switch to Rack 1.2
       when the 1mproduction 22mgroup 4mis24m used.

       This should not cause any problems  in  practice,  because  we  do  not
       attempt	to  1minstall 22mthe gems in the excluded groups, and only evaluate
       as part of the dependency resolution process.

       This also means that you cannot include different versions of the  same
       gem  in	different  groups,  because doing so would result in different
       sets of dependencies used in development and production. Because of the
       vagaries  of  the  dependency  resolution process, this usually affects
       more than the gems you list in your Gemfile(5), and can	(surprisingly)
       radically change the gems you are using.

1mTHE GEMFILE.LOCK0m
       When  you  run  1mbundle install22m, Bundler will persist the full names and
       versions of all gems that you used (including dependencies of the  gems
       specified in the Gemfile(5)) into a file called 1mGemfile.lock22m.

       Bundler uses this file in all subsequent calls to 1mbundle install22m, which
       guarantees that you always use the same exact code, even as your appli-
       cation moves across machines.

       Because	of the way dependency resolution works, even a seemingly small
       change (for instance, an update to a point-release of a dependency of a
       gem  in	your  Gemfile(5)) can result in radically different gems being
       needed to satisfy all dependencies.

       As a result, you 1mSHOULD 22mcheck your 1mGemfile.lock 22minto  version	control.
       If you do not, every machine that checks out your repository (including
       your production server) will resolve all dependencies again, which will
       result  in  different versions of third-party code being used if 1many 22mof
       the gems in the Gemfile(5) or  any  of  their  dependencies  have  been
       updated.

1mCONSERVATIVE UPDATING0m
       When  you  make a change to the Gemfile(5) and then run 1mbundle install22m,
       Bundler will update only the gems that you modified.

       In other words, if a gem that you 1mdid	not  modify  22mworked	before	you
       called  1mbundle install22m, it will continue to use the exact same versions
       of all dependencies as it used before the update.

       Let's take a look at an example. Here's your original Gemfile(5):



	   source 'https://rubygems.org'

	   gem 'actionpack', '2.3.8'
	   gem 'activemerchant'



       In this case, both 1mactionpack 22mand 1mactivemerchant 22mdepend  on  1mactivesup-0m
       1mport22m.  The	1mactionpack  22mgem  depends on 1mactivesupport 2.3.8 22mand 1mrack ~>0m
       1m1.1.022m, while the 1mactivemerchant 22mgem depends on 1mactivesupport >=  2.3.222m,
       1mbraintree >= 2.0.022m, and 1mbuilder >= 2.0.022m.

       When   the   dependencies  are  first  resolved,  Bundler  will	select
       1mactivesupport 2.3.822m, which satisfies the requirements of both  gems  in
       your Gemfile(5).

       Next, you modify your Gemfile(5) to:



	   source 'https://rubygems.org'

	   gem 'actionpack', '3.0.0.rc'
	   gem 'activemerchant'



       The  1mactionpack  3.0.0.rc  22mgem  has  a  number of new dependencies, and
       updates the 1mactivesupport 22mdependency to 1m= 3.0.0.rc 22mand the 1mrack  22mdepen-
       dency to 1m~> 1.2.122m.

       When  you  run  1mbundle  install22m,  Bundler  notices that you changed the
       1mactionpack 22mgem, but not the 1mactivemerchant 22mgem. It evaluates  the  gems
       currently being used to satisfy its requirements:

       1mactivesupport 2.3.80m
	      also  used  to  satisfy a dependency in 1mactivemerchant22m, which is
	      not being updated

       1mrack ~> 1.1.00m
	      not currently being used to satisfy another dependency

       Because you did not explicitly ask to update 1mactivemerchant22m, you  would
       not  expect it to suddenly stop working after updating 1mactionpack22m. How-
       ever, satisfying the new 1mactivesupport 3.0.0.rc 22mdependency	of  action-
       pack requires updating one of its dependencies.

       Even  though 1mactivemerchant 22mdeclares a very loose dependency that theo-
       retically matches 1mactivesupport 3.0.0.rc22m, Bundler treats gems  in  your
       Gemfile(5)  that have not changed as an atomic unit together with their
       dependencies. In this case, the 1mactivemerchant 22mdependency is treated as
       1mactivemerchant  1.7.1	+  activesupport  2.3.822m,  so 1mbundle install 22mwill
       report that it cannot update 1mactionpack22m.

       To explicitly update 1mactionpack22m, including its dependencies which other
       gems  in  the  Gemfile(5) still depend on, run 1mbundle update actionpack0m
       (see 1mbundle update(1)22m).

       1mSummary22m: In general, after making a change	to  the  Gemfile(5)  ,	you
       should  first  try  to run 1mbundle install22m, which will guarantee that no
       other gem in the Gemfile(5) is impacted by the change. If that does not
       work, run bundle update(1) 4mbundle-update.1.html24m.

1mSEE ALSO0m
       o   Gem				install 			 docs:
	   http://guides.rubygems.org/rubygems-basics/#installing-gems

       o   Rubygems signing docs: http://guides.rubygems.org/security/






				 February 2017		     BUNDLE-INSTALL(1)
