主题： portability

• Writing a portable POSIX sh script across Linux, BSD, macOS and AIX

  A script meant to run unchanged on Debian's dash, a Linux box's bash-as-sh, FreeBSD, macOS and AIX has to stay inside the POSIX Shell Command Language and avoid GNU-only tool flags; checkbashisms and a short list of GNU-versus-BSD command differences catch most of what breaks.

  article · en · reviewed · 知识截至 2026-09-24

• Python struct 传输格式：明确字节序、大小和填充

  除非契约明确要求，否则不要将原生 ABI 布局用于可移植的文件和网络格式。

  article · zh · reviewed · 知识截至 2026-09-22

机器可读： JSON