(Pipeline
  (Com {[LIT_CHARS cat]} {[VarSub 1]}  )
  (While
    (Com {[LIT_CHARS read]} {[LIT_CHARS line]}    )
    (AndOr OP_OR_IF
      (Pipeline
        (Com {[LIT_CHARS echo]} {[VarSub line]}        )
        (Com {[LIT_CHARS awk]} {[SQ <LIT_CHARS "NF==4 { print \"mkdir -p \"$4\" || exit 1; chmod \"$1\" \"$4\" || exit 1; chown \"$2\" \"$4\" || exit 1; chgrp \"$3\" \"$4\" || exit 1\" } NF==3 { print \"rm \"$1\" ; ln -s \"$3\" \"$1\" || exit 1\" } ">]}        )
        (Com {[LIT_CHARS sh]}        )
      )
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}      )
    )
  )
)