(command.CommandList
  children: [
    (C {<set>} {<-e>})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:TMP)
          op: assign_op.Equal
          rhs: {<'/tmp/mtree.'> ($ Id.VSub_Dollar '$$')}
          spids: [33]
        )
      ]
    )
    (C {<rm>} {<-rf>} {(${ Id.VSub_Name TMP)})
    (C {<mkdir>} {<-p>} {(${ Id.VSub_Name TMP)})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:K)
          op: assign_op.Equal
          rhs: 
            {<uid> <Id.Lit_Comma ','> <uname> <Id.Lit_Comma ','> <gid> <Id.Lit_Comma ','> <gname> 
              <Id.Lit_Comma ','> <flags> <Id.Lit_Comma ','> <md5digest> <Id.Lit_Comma ','> <size> <Id.Lit_Comma ','> <ripemd160digest> 
              <Id.Lit_Comma ','> <sha1digest> <Id.Lit_Comma ','> <sha256digest> <Id.Lit_Comma ','> <cksum>
            }
          spids: [55]
        )
      ]
    )
    (C {<rm>} {<-rf>} {<_FOO>})
    (C {<mkdir>} {<_FOO>})
    (C {<touch>} {<'_FOO/_uid'>})
    (C {<touch>} {<'_FOO/_size'>})
    (C {<touch>} {<'_FOO/zztype'>})
    (C {<touch>} {<'_FOO/_bar'>})
    (command.Simple
      words: [{<mtree>} {<-c>} {<-K>} {($ Id.VSub_DollarName '$K')} {<-p>} {<..>}]
      redirects: [
        (redir
          op: <Id.Redir_Great '>'>
          loc: (redir_loc.Fd fd:1)
          arg: {(${ Id.VSub_Name TMP) <'/_r'>}
        )
      ]
      do_fork: T
    )
    (command.Simple
      words: [{<mtree>} {<-c>} {<-K>} {($ Id.VSub_DollarName '$K')} {<-p>} {<..>}]
      redirects: [
        (redir
          op: <Id.Redir_Great '>'>
          loc: (redir_loc.Fd fd:1)
          arg: {(${ Id.VSub_Name TMP) <'/_r2'>}
        )
      ]
      do_fork: T
    )
    (C {<rm>} {<-rf>} {<'_FOO/_bar'>})
    (C {<rm>} {<-rf>} {<'_FOO/zztype'>})
    (C {<mkdir>} {<'_FOO/zztype'>})
    (command.Simple
      words: [{<date>}]
      redirects: [(redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<'_FOO/_size'>})]
      do_fork: T
    )
    (C {<chown>} {<nobody>} {<'_FOO/_uid'>})
    (C {<touch>} {<'_FOO/_foo'>})
    (command.Simple
      words: [{<mtree>} {<-c>} {<-K>} {($ Id.VSub_DollarName '$K')} {<-p>} {<..>}]
      redirects: [
        (redir
          op: <Id.Redir_Great '>'>
          loc: (redir_loc.Fd fd:1)
          arg: {(${ Id.VSub_Name TMP) <'/_t'>}
        )
      ]
      do_fork: T
    )
    (C {<rm>} {<-fr>} {<_FOO>})
    (command.If
      arms: [
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (C {<mtree>} {<-f>} {(${ Id.VSub_Name TMP) <'/_r'>} {<-f>} 
                      {(${ Id.VSub_Name TMP) <'/_r2'>}
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [(C {<true>})]
          spids: [208 228]
        )
      ]
      else_action: [
        (command.Simple
          words: [{<echo>} {(DQ <'ERROR Compare identical failed'>)}]
          redirects: [(redir op:<Id.Redir_GreatAnd '1>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
          do_fork: T
        )
        (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      words: [
                        {<mtree>}
                        {<-f>}
                        {(${ Id.VSub_Name TMP) <'/_r'>}
                        {<-f>}
                        {(${ Id.VSub_Name TMP) <'/_t'>}
                      ]
                      redirects: [
                        (redir
                          op: <Id.Redir_Great '>'>
                          loc: (redir_loc.Fd fd:1)
                          arg: {(${ Id.VSub_Name TMP) <'/_'>}
                        )
                      ]
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.Simple
              words: [{<echo>} {(DQ <'ERROR Compare different succeeded'>)}]
              redirects: [(redir op:<Id.Redir_GreatAnd '1>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              do_fork: T
            )
            (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [254 281]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (C {<Id.Lit_LBracket '['>} 
                      {
                        (command_sub
                          left_token: <Id.Left_Backtick '`'>
                          child: 
                            (command.Simple
                              words: [{<wc>} {<-l>}]
                              redirects: [
                                (redir
                                  op: <Id.Redir_Less '<'>
                                  loc: (redir_loc.Fd fd:0)
                                  arg: {(${ Id.VSub_Name TMP) <'/_'>}
                                )
                              ]
                              do_fork: T
                            )
                        )
                      } {<-ne>} {<10>} {<Id.Lit_RBracket ']'>}
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          action: [
            (command.Simple
              words: [
                {<echo>}
                {
                  (DQ <'ERROR wrong number of lines: '> 
                    (command_sub
                      left_token: <Id.Left_Backtick '`'>
                      child: (C {<wc>} {<-l>} {(${ Id.VSub_Name TMP) <'/_'>})
                    )
                  )
                }
              ]
              redirects: [(redir op:<Id.Redir_GreatAnd '1>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
              do_fork: T
            )
            (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [301 328]
        )
      ]
    )
    (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<0>})
  ]
)