(CommandList
  children: [
    (C {(set)} {(-o)} {(errexit)})
    (C {(set)} {(-o)} {(nounset)})
    (C {(set)} {(-o)} {(pipefail)})
    (SimpleCommand
      words: [{(hostname)}]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/etc/hostname)} spids:[71])]
    )
  ]
)