"-z" 옵션을 사용할 수 없을 때 "head -z"에 해당하는 명령을 어떻게 실행합니까?

head -z스크립트가 필요합니다 (주제에서 벗어났지만 동기를 찾을 수 있음).이 질문에는), 하지만 내 CoreOS 835.13.0에서는 head: invalid option -- 'z'.

전체 head --help출력:

Usage: head [OPTION]... [FILE]...
Print the first 10 lines of each FILE to standard output.
With more than one FILE, precede each with a header giving the file name.
With no FILE, or when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.
  -c, --bytes=[-]K         print the first K bytes of each file;
                             with the leading '-', print all but the last
                             K bytes of each file
  -n, --lines=[-]K         print the first K lines instead of the first 10;
                             with the leading '-', print all but the last
                             K lines of each file
  -q, --quiet, --silent    never print headers giving file names
  -v, --verbose            always print headers giving file names
      --help     display this help and exit
      --version  output version information and exit

K may have a multiplier suffix:
b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024,
GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y.

GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report head translation bugs to <http://translationproject.org/team/>
For complete documentation, run: info coreutils 'head invocation'

흥미롭게도 마지막 줄에는 달리라고 나와 있지만, info coreutils 'head invocation'나는 그 말을 이해합니다 info: command not found.