(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])] ) ] )