(command.CommandList
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        (command.Sentence
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          terminator: <Id.Op_Semi ';'>
        )
        (command.AndOr
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            (C {(Id.KW_Set set)} {(-x)})
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      ]
    )
    (command.ShFunction
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      body: 
        (command.BraceGroup
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            (C {(local)} {(FREE_MEMORY)})
            (C {(echo)} 
              {
                (DQ ('Preparing to install ') ($ Id.VSub_DollarName '$DOKKU_TAG') (' from ') 
                  ($ Id.VSub_DollarName '$DOKKU_REPO') (...)
                )
              }
            )
            (command.If
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                (if_arm
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                    (command.Sentence
                      child: 
                        (command.Pipeline
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                            (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
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                      arg_word: {(1)}
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                  spids: [72 86]
                )
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            (command.AndOr
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                  redirects: [
                    (redir.Redir
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                      fd: -1
                      arg_word: {(/dev/null)}
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                    (redir.Redir op:<Id.Redir_GreatAnd '2>&'> fd:2 arg_word:{(1)})
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                )
                (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
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                      arg_word: {(1)}
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                  ]
                )
              ]
            )
            (command.ShAssignment
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                  op: assign_op.Equal
                  rhs: 
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                      (command_sub
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                        command_list: 
                          (command.CommandList
                            children: [
                              (command.Pipeline
                                children: [
                                  (C {(grep)} {(MemTotal)} {(/proc/meminfo)})
                                  (C {(awk)} {(SQ <'{print $2}'>)})
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                                negated: F
                              )
                            ]
                          )
                      )
                    }
                  spids: [137]
                )
              ]
            )
            (command.If
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                (if_arm
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                    (command.Sentence
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                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
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                              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
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                        (command.DBracket
                          expr: 
                            (bool_expr.Binary
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                                {
                                  (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 '$DOKKU_BRANCH'))}
                    )
                  ]
                  spids: [262 273]
                )
                (if_arm
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                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ Id.VSub_DollarName '$DOKKU_TAG')}
                            )
                        )
                      terminator: <Id.Op_Semi ';'>
                    )
                  ]
                  action: [
                    (C {(local)} 
                      {(Id.Lit_VarLike 'DOKKU_SEMVER=') 
                        (DQ 
                          (braced_var_sub
                            token: <Id.VSub_Name DOKKU_TAG>
                            suffix_op: (suffix_op.PatSub pat:{(v)} replace_mode:Id.Lit_Slash)
                          )
                        )
                      }
                    )
                    (command.ShAssignment
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                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {(echo)} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {(awk)} {(SQ <'{split($0,a,"."); print a[1]}'>)})
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                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [311]
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:minor)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {(echo)} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {(awk)} {(SQ <'{split($0,a,"."); print a[2]}'>)})
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                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [329]
                        )
                      ]
                    )
                    (command.ShAssignment
                      pairs: [
                        (assign_pair
                          lhs: (sh_lhs_expr.Name name:patch)
                          op: assign_op.Equal
                          rhs: 
                            {
                              (command_sub
                                left_token: <Id.Left_DollarParen '$('>
                                command_list: 
                                  (command.CommandList
                                    children: [
                                      (command.Pipeline
                                        children: [
                                          (C {(echo)} {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))})
                                          (C {(awk)} {(SQ <'{split($0,a,"."); print a[3]}'>)})
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                                        negated: F
                                      )
                                    ]
                                  )
                              )
                            }
                          spids: [347]
                        )
                      ]
                    )
                    (command.If
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                        (if_arm
                          cond: [
                            (command.Sentence
                              child: 
                                (command.AndOr
                                  ops: [Id.Op_DAmp Id.Op_DAmp]
                                  children: [
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
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                                          right: {(DQ (0))}
                                        )
                                    )
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
                                          left: {(DQ ($ 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 '$DOKKU_SEMVER'))}
                            )
                            (C {(echo)} {(DQ ('--> Running post-install dependency installation'))})
                            (C {(dokku)} {(plugins-install-dependencies)})
                          ]
                          spids: [370 419]
                        )
                        (if_arm
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                            (command.Sentence
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                                (command.AndOr
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                                  children: [
                                    (command.DBracket
                                      expr: 
                                        (bool_expr.Binary
                                          op_id: Id.BoolBinary_eq
                                          left: {(DQ ($ 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 '$patch'))}
                                          right: {(DQ (0))}
                                        )
                                    )
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                                )
                              terminator: <Id.Op_Semi ';'>
                            )
                          ]
                          action: [
                            (C {(install-dokku-from-package)} 
                              {(DQ ($ Id.VSub_DollarName '$DOKKU_SEMVER'))}
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                            (C {(echo)} {(DQ ('--> Running post-install dependency installation'))})
                            (C {(sudo)} {(-E)} {(dokku)} 
                              {(plugin) (Id.Lit_Other ':') (install-dependencies)} {(--core)}
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                          ]
                          spids: [445 494]
                        )
                      ]
                      else_action: [
                        (C {(install-dokku-from-source)} {(DQ ($ Id.VSub_DollarName '$DOKKU_TAG'))})
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                    )
                  ]
                  spids: [284 295]
                )
              ]
              else_action: [
                (C {(install-dokku-from-package)})
                (C {(echo)} {(DQ ('--> Running post-install dependency installation'))})
                (C {(sudo)} {(-E)} {(dokku)} {(plugin) (Id.Lit_Other ':') (install-dependencies)} 
                  {(--core)}
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              ]
            )
          ]
        )
    )
    (command.ShFunction
      name: install-dokku-from-source
      body: 
        (command.BraceGroup
          children: [
            (C {(local)} {(Id.Lit_VarLike 'DOKKU_CHECKOUT=') (DQ ($ Id.VSub_Number '$1'))})
            (C {(apt-get)} {(-qq)} {(-y)} {(install)} {(git)} {(make)} {(software-properties-common)})
            (C {(cd)} {(/root)})
            (command.If
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                (if_arm
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                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.LogicalNot
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                        )
                      terminator: <Id.Op_Semi ';'>
                    )
                  ]
                  action: [
                    (C {(git)} {(clone)} {(DQ ($ Id.VSub_DollarName '$DOKKU_REPO'))} {(/root/dokku)})
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                  spids: [604 617]
                )
              ]
            )
            (C {(cd)} {(/root/dokku)})
            (C {(git)} {(fetch)} {(origin)})
            (command.AndOr
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              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ 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 '$1'))})
            (C {(local)} 
              {(Id.Lit_VarLike 'NO_INSTALL_RECOMMENDS=') 
                (braced_var_sub
                  token: <Id.VSub_Name DOKKU_NO_INSTALL_RECOMMENDS>
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                )
              }
            )
            (command.If
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                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.DBracket
                          expr: 
                            (bool_expr.Unary
                              op_id: Id.BoolUnary_n
                              child: {($ 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
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                (if_arm
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                    (command.Sentence
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                        (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)})
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                  spids: [761 776]
                )
              ]
            )
            (command.Pipeline
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                (C {(wget)} {(-nv)} {(-O)} {(-)} {(https) (Id.Lit_Other ':') (//get.docker.com/)})
                (C {(sh)})
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              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)} {(-)})
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              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)})
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              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 '$DOKKU_VHOST_ENABLE')
                        )
                      }
                    )
                    (C {(sudo)} {(debconf-set-selections)})
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                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_WEB_CONFIG')}
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                )
                (command.Pipeline
                  children: [
                    (C {(echo)} 
                      {
                        (DQ ('dokku dokku/web_config boolean ') 
                          ($ Id.VSub_DollarName '$DOKKU_WEB_CONFIG')
                        )
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                    (C {(sudo)} {(debconf-set-selections)})
                  ]
                  negated: F
                )
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            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_HOSTNAME')}
                    )
                )
                (command.Pipeline
                  children: [
                    (C {(echo)} 
                      {(DQ ('dokku dokku/hostname string ') ($ Id.VSub_DollarName '$DOKKU_HOSTNAME'))}
                    )
                    (C {(sudo)} {(debconf-set-selections)})
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                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ Id.VSub_DollarName '$DOKKU_SKIP_KEY_FILE')}
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                (command.Pipeline
                  children: [
                    (C {(echo)} 
                      {
                        (DQ ('dokku dokku/skip_key_file boolean ') 
                          ($ Id.VSub_DollarName '$DOKKU_SKIP_KEY_FILE')
                        )
                      }
                    )
                    (C {(sudo)} {(debconf-set-selections)})
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                  negated: F
                )
              ]
            )
            (command.AndOr
              ops: [Id.Op_DAmp]
              children: [
                (command.DBracket
                  expr: 
                    (bool_expr.Unary
                      op_id: Id.BoolUnary_n
                      child: {($ 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 '$@'))})
  ]
)