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What are Alpha console environment variables?

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What are Alpha console environment variables?

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Alpha systems have a variety of variables with values set up within the SRM system console. These environment variables control the particular behaviour of the console program and the system hardware, the particular console interface presented to the operating system, various default values for the operating system bootstrap, and related control mechanisms-in other words, “the environment variables provide an easily extensible mechanism for managing complex console state.” The specific environment variables differ by platform and by firmware version-the baseline set is established by the Alpha Architecture: AUTO_ACTION (“BOOT”, “HALT”, “RESTART”, any other value assumed to be HALT), BOOT_DEV, BOOTDEF_DEV, BOOTED_DEV, BOOT_FILE, BOOTED_FILE, BOOT_OSFLAGS, BOOTED_OSFLAGS, BOOT_RESET (“ON”, “OFF”), DUMP_DEV, ENABLE_AUDIT (“ON”, “OFF”), LICENSE, CHAR_SET, LANGUAGE, TTY_DEV. OpenVMS Galaxy (vPars) firmware can add console environment variables beginning with such strings as LP_* and HP_*, a

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