Undocumented OpenVMS: F$GETENV

F$getenv is a lexical function available since OpenVMS 6.1 on the Alpha platform. It allows you to retrieve the value of environment variables set at the boot level.

Available item codes

The module $STENVDEF in sys$library:sys$starlet_c.tlb contains a list of all known item codes. As of the time of this writing these were:

• AUTO_ACTION
• BOOT_DEV
• BOOTCMD_DEV
• BOOTED_DEV
• BOOT_FILE
• BOOTED_FILE
• BOOT_OSFLAGS
• BOOTED_OSFLAGS
• BOOT_RESET
• DUMP_DEV
• ENABLE_AUDIT
• LICENSE
• CHAR_SET
• LANGUAGE
• TTY_DEV
• SYSROOT
• BTFLAGS

Example

A short command-file to demonstrate the usage of f$getenv in DCL, produces output like the following:

AUTO_ACTION:            HALT
BOOT_DEV:               SCSI 0 6 0 0 0 0 FLAMG-IO
BOOTCMD_DEV:            DKA0
BOOTED_DEV:             SCSI 0 6 0 0 0 0 FLAMG-IO
BOOT_FILE:
BOOTED_FILE:
BOOT_OSFLAGS:           0,0
BOOTED_OSFLAGS:         0,0
BOOT_RESET:             ON
DUMP_DEV:
ENABLE_AUDIT:           ON
LICENSE:                SU
CHAR_SET:
LANGUAGE:               6
TTY_DEV:                0
SYSROOT:                <not valid on this node>
BTFLAGS:                <not valid on this node>

Comments to: Martin P.J. Zinser
Last modified: 20020628