(command.CommandList
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    (command.Simple
      blame_tok: <echo>
      more_env: []
      words: [{<echo>} {(DQ <'*** GET KERNEL BEGIN ***'>)}]
      redirects: []
      do_fork: T
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'SRC_DIR='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'SRC_DIR='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'SRC_DIR='> name:SRC_DIR)
          op: assign_op.Equal
          rhs: 
            {
              (CommandSub
                left_token: <Id.Left_DollarParen '$('>
                child: 
                  (command.Simple
                    blame_tok: <pwd>
                    more_env: []
                    words: [{<pwd>}]
                    redirects: []
                    do_fork: T
                  )
                right: <Id.Eof_RParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'DOWNLOAD_URL='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'DOWNLOAD_URL='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'DOWNLOAD_URL='> name:DOWNLOAD_URL)
          op: assign_op.Equal
          rhs: 
            {
              (CommandSub
                left_token: <Id.Left_DollarParen '$('>
                child: 
                  (command.Pipeline
                    children: [
                      (command.Simple
                        blame_tok: <grep>
                        more_env: []
                        words: [{<grep>} {<-i>} {<Id.Lit_Other '^'> <KERNEL_SOURCE_URL>} {<.config>}]
                        redirects: []
                        do_fork: T
                      )
                      (command.Simple
                        blame_tok: <cut>
                        more_env: []
                        words: [{<cut>} {<-f2>} {<-d> (SQ <'='>)}]
                        redirects: []
                        do_fork: T
                      )
                    ]
                    ops: [<Id.Op_Pipe _>]
                  )
                right: <Id.Eof_RParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'ARCHIVE_FILE='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'ARCHIVE_FILE='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'ARCHIVE_FILE='> name:ARCHIVE_FILE)
          op: assign_op.Equal
          rhs: 
            {
              (BracedVarSub
                left: <Id.Left_DollarBrace '${'>
                token: <Id.VSub_Name DOWNLOAD_URL>
                var_name: DOWNLOAD_URL
                suffix_op: 
                  (suffix_op.Unary
                    op: <Id.VOp1_DPound '##'>
                    arg_word: {<Id.Lit_Other '*'> <Id.Lit_Slash '/'>}
                  )
                right: <Id.Right_DollarBrace '}'>
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'USE_LOCAL_SOURCE='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'USE_LOCAL_SOURCE='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'USE_LOCAL_SOURCE='> name:USE_LOCAL_SOURCE)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (CommandSub
                  left_token: <Id.Left_DollarParen '$('>
                  child: 
                    (command.Pipeline
                      children: [
                        (command.Simple
                          blame_tok: <grep>
                          more_env: []
                          words: [{<grep>} {<-i>} {<Id.Lit_Other '^'> <USE_LOCAL_SOURCE>} {<.config>}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <cut>
                          more_env: []
                          words: [{<cut>} {<-f2>} {<-d> (SQ <'='>)}]
                          redirects: []
                          do_fork: T
                        )
                      ]
                      ops: [<Id.Op_Pipe _>]
                    )
                  right: <Id.Eof_RParen _>
                )
              )
            }
        )
      ]
      redirects: []
    )
    (command.If
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      arms: [
        (IfArm
          keyword: <Id.KW_If if>
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: <Id.Lit_LBracket '['>
                      more_env: []
                      words: [
                        {<Id.Lit_LBracket '['>}
                        {(DQ ($ Id.VSub_DollarName USE_LOCAL_SOURCE))}
                        {<Id.Lit_Equals '='>}
                        {(DQ <true>)}
                        {<-a>}
                        {<Id.KW_Bang '!'>}
                        {<-f>}
                        {($ Id.VSub_DollarName SRC_DIR) <'/source/'> 
                          ($ Id.VSub_DollarName ARCHIVE_FILE)
                        }
                        {<Id.Lit_RBracket ']'>}
                      ]
                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [
                {<echo>}
                {
                  (DQ <'Source bundle '> ($ Id.VSub_DollarName SRC_DIR) <'/source/'> 
                    ($ Id.VSub_DollarName ARCHIVE_FILE) <' is missing and will be downloaded.'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.ShAssignment
              left: <Id.Lit_VarLike 'USE_LOCAL_SOURCE='>
              pairs: [
                (AssignPair
                  left: <Id.Lit_VarLike 'USE_LOCAL_SOURCE='>
                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike 'USE_LOCAL_SOURCE='>
                      name: USE_LOCAL_SOURCE
                    )
                  op: assign_op.Equal
                  rhs: {(DQ <false>)}
                )
              ]
              redirects: []
            )
          ]
          spids: [85 113]
        )
      ]
      else_action: []
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.Simple blame_tok:<cd> more_env:[] words:[{<cd>} {<source>}] redirects:[] do_fork:T)
    (command.If
      if_kw: <Id.KW_If if>
      arms: [
        (IfArm
          keyword: <Id.KW_If if>
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: <Id.Lit_LBracket '['>
                      more_env: []
                      words: [
                        {<Id.Lit_LBracket '['>}
                        {<Id.KW_Bang '!'>}
                        {(DQ ($ Id.VSub_DollarName USE_LOCAL_SOURCE))}
                        {<Id.Lit_Equals '='>}
                        {(DQ <true>)}
                        {<Id.Lit_RBracket ']'>}
                      ]
                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [
                {<echo>}
                {(DQ <'Downloading kernel source bundle from '> ($ Id.VSub_DollarName DOWNLOAD_URL))}
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <wget>
              more_env: []
              words: [{<wget>} {<-c>} {($ Id.VSub_DollarName DOWNLOAD_URL)}]
              redirects: []
              do_fork: T
            )
          ]
          spids: [140 160]
        )
      ]
      else_kw: <Id.KW_Else else>
      else_action: [
        (command.Simple
          blame_tok: <echo>
          more_env: []
          words: [
            {<echo>}
            {
              (DQ <'Using local kernel source bundle '> ($ Id.VSub_DollarName SRC_DIR) <'/source/'> 
                ($ Id.VSub_DollarName ARCHIVE_FILE)
              )
            }
          ]
          redirects: []
          do_fork: T
        )
      ]
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.Simple
      blame_tok: <echo>
      more_env: []
      words: [{<echo>} {(DQ <'Removing kernel work area. This may take a while...'>)}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <rm>
      more_env: []
      words: [{<rm>} {<-rf>} {<'../work/kernel'>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <mkdir>
      more_env: []
      words: [{<mkdir>} {<'../work/kernel'>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <tar>
      more_env: []
      words: [{<tar>} {<-xvf>} {($ Id.VSub_DollarName ARCHIVE_FILE)} {<-C>} {<'../work/kernel'>}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <cd>
      more_env: []
      words: [{<cd>} {($ Id.VSub_DollarName SRC_DIR)}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <echo>
      more_env: []
      words: [{<echo>} {(DQ <'*** GET KERNEL END ***'>)}]
      redirects: []
      do_fork: T
    )
  ]
)