10f66f451Sopenharmony_ciPosix commands 20f66f451Sopenharmony_ci 30f66f451Sopenharmony_ciCommands defined in POSIX-2008, also known as the Single Unix 40f66f451Sopenharmony_ciSpecification version 4, available online at 50f66f451Sopenharmony_cihttp://pubs.opengroup.org/onlinepubs/9699919799/idx/utilities.html 6