The POSIX Shell Standard
The POSIX Shell Standard
The POSIX shell standard (IEEE Std 1003.1) guarantees compatibility across every Unix and Linux distribution. A POSIX script does not use Bash-specific extensions.
October 31, 2026
The POSIX shell standard (IEEE Std 1003.1) guarantees compatibility across every Unix and Linux distribution. A POSIX script does not use Bash-specific extensions.