(command.CommandList
  children: [
    (command.CommandList
      children: [
        (command.Sentence
          child: (C {<Id.KW_Set set>} {<-eo>} {<pipefail>})
          terminator: <Id.Op_Semi _>
        )
        (command.AndOr
          ops: [Id.Op_DAmp]
          children: [
            (command.DBracket expr:(bool_expr.WordTest w:{($ Id.VSub_DollarName '$TRACE')}))
            (C {<Id.KW_Set set>} {<-x>})
          ]
        )
      ]
    )
    (command.ShFunction
      name: ensure-environment
      body: 
        (command.BraceGroup
          children: [
            (C {<local>} {<FREE_MEMORY>})
            (C {<echo>} 
              {
                (DQ <'Preparing to install '> ($ Id.VSub_DollarName '$DOKKU_TAG') <' from '> 
                  ($ Id.VSub_DollarName '$DOKKU_REPO') <...>
                )
              }
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.Pipeline
                          children: [
                            (command.Simple
                              words: [{<command>} {<-v>} {<apt-get>}]
                              redirects: [
                                (redir.Redir
                                  op: <Id.Redir_AndGreat '&>'>
                                  fd: -1
                                  arg_word: {</dev/null>}
                                )
                              ]
                            )
                          ]
                          negated: T
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<echo>} 
                      {
                        (DQ 
                          <
'This installation script requires apt-get. For manual installation instructions, consult http://dokku.viewdocs.io/dokku/advanced-installation/'
                          >
                        )
                      }
                    )
                    (command.ControlFlow
                      token: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                  spids: [72 86]
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DPipe]
              children: [
                (command.Simple
                  words: [{<hostname>} {<-f>}]
                  redirects: [
                    (redir.Redir
                      op: <Id.Redir_Great '>'>
                      fd: -1
                      arg_word: {</dev/null>}
                    )
                    (redir.Redir op:<Id.Redir_GreatAnd '2>&'> fd:2 arg_word:{<1>})
                  ]
                )
                (command.BraceGroup
                  children: [
                    (C {<echo>} 
                      {
                        (DQ 
                          <
'This installation script requires that you have a hostname set for the instance. Please set a hostname for 127.0.0.1 in your /etc/hosts'
                          >
                        )
                      }
                    )
                    (command.ControlFlow
                      token: <Id.ControlFlow_Exit exit>
                      arg_word: {<1>}
                    )
                  ]
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:FREE_MEMORY)
                  op: assign_op.Equal
                  rhs: 
                    {
                      (command_sub
                        left_token: <Id.Left_DollarParen '$('>
                        command_list: 
                          (command.CommandList
                            children: [
                              (command.Pipeline
                                children: [
                                  (C {<grep>} {<MemTotal>} {</proc/meminfo>})
                                  (C {<awk>} {(SQ <'{print $2}'>)})
                                ]
                                negated: F
                              )
                            ]
                          )
                      )
                    }
                  spids: [137]
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_lt
                              left: {(DQ ($ Id.VSub_DollarName '$FREE_MEMORY'))}
                              right: {<1003600>}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<echo>} 
                      {
                        (DQ 
                          <
'For dokku to build containers, it is strongly suggested that you have 1024 megabytes or more of free memory'
                          >
                        )
                      }
                    )
                    (C {<echo>} 
                      {
                        (DQ 
                          <
'If necessary, please consult this document to setup swap: http://dokku.viewdocs.io/dokku/advanced-installation/#vms-with-less-than-1gb-of-memory'
                          >
                        )
                      }
                    )
                  ]
                  spids: [155 170]
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: install-requirements
      body: 
        (command.BraceGroup
          children: [
            (C {<echo>} {(DQ <'--> Ensuring we have the proper dependencies'>)})
            (command.Simple
              words: [{<apt-get>} {<update>} {<-qq>}]
              redirects: [(redir.Redir op:<Id.Redir_Great '>'> fd:-1 arg_word:{</dev/null>})]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
                              op_id: Id.BoolBinary_GlobDEqual
                              left: 
                                {
                                  (command_sub
                                    left_token: <Id.Left_DollarParen '$('>
                                    command_list: 
                                      (command.CommandList
                                        children: [(C {<lsb_release>} {<-sr>})]
                                      )
                                  )
                                }
                              right: {(DQ <12.04>)}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [(C {<apt-get>} {<-qq>} {<-y>} {<install>} {<python-software-properties>})]
                  spids: [217 236]
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: install-dokku
      body: 
        (command.BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName '$DOKKU_BRANCH')}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<install-dokku-from-source>} 
                      {(DQ <origin/> ($ Id.VSub_DollarName '$DOKKU_BRANCH'))}
                    )
                  ]
                  spids: [262 273]
                )
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName '$DOKKU_TAG')}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<local>} 
                      {<Id.Lit_VarLike 'DOKKU_SEMVER='> 
                        (DQ 
                          (braced_var_sub
                            token: <Id.VSub_Name DOKKU_TAG>
                            suffix_op: (suffix_op.PatSub pat:{<v>} replace_mode:Id.Lit_Slash)
                          )
                        )
                      }
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:major)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {<echo>} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {<awk>} {(SQ <'{split($0,a,"."); print a[1]}'>)})
                                        ]
                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [311]
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:minor)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {<echo>} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {<awk>} {(SQ <'{split($0,a,"."); print a[2]}'>)})
                                        ]
                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [329]
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:patch)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {<echo>} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {<awk>} {(SQ <'{split($0,a,"."); print a[3]}'>)})
                                        ]
                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [347]
                        )
                      ]
                    )
                    (command.If
                      arms: [
                        (if_arm
                          cond: [
                            (command.Sentence
                              child: 
                                (command.AndOr
                                  ops: [Id.Op_DAmp Id.Op_DAmp]
                                  children: [
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
                                          left: {(DQ ($ Id.VSub_DollarName '$major'))}
                                          right: {(DQ <0>)}
                                        )
                                    )
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
                                          left: {(DQ ($ Id.VSub_DollarName '$minor'))}
                                          right: {(DQ <3>)}
                                        )
                                    )
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_ge
                                          left: {(DQ ($ Id.VSub_DollarName '$patch'))}
                                          right: {(DQ <13>)}
                                        )
                                    )
                                  ]
                                )
                              terminator: <Id.Op_Semi _>
                            )
                          ]
                          action: [
                            (C {<install-dokku-from-package>} 
                              {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))}
                            )
                            (C {<echo>} {(DQ <'--> Running post-install dependency installation'>)})
                            (C {<dokku>} {<plugins-install-dependencies>})
                          ]
                          spids: [370 419]
                        )
                        (if_arm
                          cond: [
                            (command.Sentence
                              child: 
                                (command.AndOr
                                  ops: [Id.Op_DAmp Id.Op_DAmp]
                                  children: [
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
                                          left: {(DQ ($ Id.VSub_DollarName '$major'))}
                                          right: {(DQ <0>)}
                                        )
                                    )
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_ge
                                          left: {(DQ ($ Id.VSub_DollarName '$minor'))}
                                          right: {(DQ <4>)}
                                        )
                                    )
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_ge
                                          left: {(DQ ($ Id.VSub_DollarName '$patch'))}
                                          right: {(DQ <0>)}
                                        )
                                    )
                                  ]
                                )
                              terminator: <Id.Op_Semi _>
                            )
                          ]
                          action: [
                            (C {<install-dokku-from-package>} 
                              {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))}
                            )
                            (C {<echo>} {(DQ <'--> Running post-install dependency installation'>)})
                            (C {<sudo>} {<-E>} {<dokku>} 
                              {<plugin> <Id.Lit_Other ':'> <install-dependencies>} {<--core>}
                            )
                          ]
                          spids: [445 494]
                        )
                      ]
                      else_action: [
                        (C {<install-dokku-from-source>} {(DQ ($ Id.VSub_DollarName '$DOKKU_TAG'))})
                      ]
                    )
                  ]
                  spids: [284 295]
                )
              ]
              else_action: [
                (C {<install-dokku-from-package>})
                (C {<echo>} {(DQ <'--> Running post-install dependency installation'>)})
                (C {<sudo>} {<-E>} {<dokku>} {<plugin> <Id.Lit_Other ':'> <install-dependencies>} 
                  {<--core>}
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: install-dokku-from-source
      body: 
        (command.BraceGroup
          children: [
            (C {<local>} {<Id.Lit_VarLike 'DOKKU_CHECKOUT='> (DQ ($ Id.VSub_Number '$1'))})
            (C {<apt-get>} {<-qq>} {<-y>} {<install>} {<git>} {<make>} {<software-properties-common>})
            (C {<cd>} {</root>})
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.LogicalNot
                              child: (bool_expr.Unary op_id:Id.BoolUnary_d child:{</root/dokku>})
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<git>} {<clone>} {(DQ ($ Id.VSub_DollarName '$DOKKU_REPO'))} {</root/dokku>})
                  ]
                  spids: [604 617]
                )
              ]
            )
            (C {<cd>} {</root/dokku>})
            (C {<git>} {<fetch>} {<origin>})
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_CHECKOUT')}
                    )
                )
                (C {<git>} {<checkout>} {(DQ ($ Id.VSub_DollarName '$DOKKU_CHECKOUT'))})
              ]
            )
            (C {<make>} {<install>})
          ]
        )
    )
    (command.ShFunction
      name: install-dokku-from-package
      body: 
        (command.BraceGroup
          children: [
            (C {<local>} {<Id.Lit_VarLike 'DOKKU_CHECKOUT='> (DQ ($ Id.VSub_Number '$1'))})
            (C {<local>} 
              {<Id.Lit_VarLike 'NO_INSTALL_RECOMMENDS='> 
                (braced_var_sub
                  token: <Id.VSub_Name DOKKU_NO_INSTALL_RECOMMENDS>
                  suffix_op: (suffix_op.Unary op_id:Id.VTest_ColonEquals arg_word:{(DQ )})
                )
              }
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName '$DOKKU_DOCKERFILE')}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:NO_INSTALL_RECOMMENDS)
                          op: assign_op.Equal
                          rhs: {(DQ <' --no-install-recommends '>)}
                          spids: [714]
                        )
                      ]
                    )
                  ]
                  spids: [700 711]
                )
              ]
            )
            (C {<echo>} {(DQ <'--> Initial apt-get update'>)})
            (command.Simple
              words: [{<apt-get>} {<update>} {<-qq>}]
              redirects: [(redir.Redir op:<Id.Redir_Great '>'> fd:-1 arg_word:{</dev/null>})]
            )
            (C {<apt-get>} {<-qq>} {<-y>} {<install>} {<apt-transport-https>})
            (C {<echo>} {(DQ <'--> Installing docker'>)})
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.Pipeline
                          children: [(C {<uname>} {<-r>}) (C {<grep>} {<-q>} {<linode>})]
                          negated: F
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<echo>} 
                      {
                        (DQ 
                          <
'--> NOTE: Using Linode? Docker might complain about missing AUFS support.'
                          >
                        )
                      }
                    )
                    (C {<echo>} 
                      {
                        (DQ 
                          <'    See http://dokku.viewdocs.io/dokku/getting-started/install/linode/'>
                        )
                      }
                    )
                    (C {<echo>} {(DQ <'    Installation will continue in 10 seconds.'>)})
                    (C {<sleep>} {<10>})
                  ]
                  spids: [761 776]
                )
              ]
            )
            (command.Pipeline
              children: [
                (C {<wget>} {<-nv>} {<-O>} {<->} {<https> <Id.Lit_Other ':'> <//get.docker.com/>})
                (C {<sh>})
              ]
              negated: F
            )
            (C {<echo>} {(DQ <'--> Installing dokku'>)})
            (command.Pipeline
              children: [
                (C {<wget>} {<-nv>} {<-O>} {<->} {<https> <Id.Lit_Other ':'> <//packagecloud.io/gpg.key>})
                (C {<apt-key>} {<add>} {<->})
              ]
              negated: F
            )
            (command.Pipeline
              children: [
                (C {<echo>} {(DQ <'deb https://packagecloud.io/dokku/dokku/ubuntu/ trusty main'>)})
                (C {<tee>} {</etc/apt/sources.list.d/dokku.list>})
              ]
              negated: F
            )
            (command.Simple
              words: [{<apt-get>} {<update>} {<-qq>}]
              redirects: [(redir.Redir op:<Id.Redir_Great '>'> fd:-1 arg_word:{</dev/null>})]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_VHOST_ENABLE')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {<echo>} 
                      {
                        (DQ <'dokku dokku/vhost_enable boolean '> 
                          ($ Id.VSub_DollarName '$DOKKU_VHOST_ENABLE')
                        )
                      }
                    )
                    (C {<sudo>} {<debconf-set-selections>})
                  ]
                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_WEB_CONFIG')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {<echo>} 
                      {
                        (DQ <'dokku dokku/web_config boolean '> 
                          ($ Id.VSub_DollarName '$DOKKU_WEB_CONFIG')
                        )
                      }
                    )
                    (C {<sudo>} {<debconf-set-selections>})
                  ]
                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_HOSTNAME')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {<echo>} 
                      {(DQ <'dokku dokku/hostname string '> ($ Id.VSub_DollarName '$DOKKU_HOSTNAME'))}
                    )
                    (C {<sudo>} {<debconf-set-selections>})
                  ]
                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_SKIP_KEY_FILE')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {<echo>} 
                      {
                        (DQ <'dokku dokku/skip_key_file boolean '> 
                          ($ Id.VSub_DollarName '$DOKKU_SKIP_KEY_FILE')
                        )
                      }
                    )
                    (C {<sudo>} {<debconf-set-selections>})
                  ]
                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_KEY_FILE')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {<echo>} 
                      {(DQ <'dokku dokku/key_file string '> ($ Id.VSub_DollarName '$DOKKU_KEY_FILE'))}
                    )
                    (C {<sudo>} {<debconf-set-selections>})
                  ]
                  negated: F
                )
              ]
            )
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName '$DOKKU_CHECKOUT')}
                            )
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                  action: [
                    (C {<apt-get>} {<-qq>} {<-y>} {($ Id.VSub_DollarName '$NO_INSTALL_RECOMMENDS')} 
                      {<install>} {(DQ <'dokku='> ($ Id.VSub_DollarName '$DOKKU_CHECKOUT'))}
                    )
                  ]
                  spids: [1000 1011]
                )
              ]
              else_action: [
                (C {<apt-get>} {<-qq>} {<-y>} {($ Id.VSub_DollarName '$NO_INSTALL_RECOMMENDS')} 
                  {<install>} {<dokku>}
                )
              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: main
      body: 
        (command.BraceGroup
          children: [
            (C {<export>} {<Id.Lit_VarLike 'DEBIAN_FRONTEND='> <noninteractive>})
            (C {<export>} 
              {<Id.Lit_VarLike 'DOKKU_REPO='> 
                (braced_var_sub
                  token: <Id.VSub_Name DOKKU_REPO>
                  suffix_op: 
                    (suffix_op.Unary
                      op_id: Id.VTest_ColonHyphen
                      arg_word: {(DQ <'https://github.com/dokku/dokku.git'>)}
                    )
                )
              }
            )
            (C {<ensure-environment>})
            (C {<install-requirements>})
            (C {<install-dokku>})
          ]
        )
    )
    (C {<main>} {(DQ ($ Id.VSub_At '$@'))})
  ]
)