$ZV[ERSION] contains a string value specifying the currently installed GT.M. $ZV[ERSION] is a space-delimited string with four pieces as follows:
<product> <release> <OS> <architecture>
<product> is always "GT.M".
<release> always begins with "V", and has the structure V<DB_Format>.<major_release>-<minor_release>[<bug_fix_level>] where:
<DB_Format> identifies the block format of GT.M database files compatible with the release. For example, V4, V5, and V6. The <DB_Format> piece in $ZVERSION does not change even when a MUPIP UPRGRADE or MUPIP DOWNGRADE changes the DB Format element in the database fileheader.
<major_release> identifies a release with major enhancements.
<minor_release> identifies minor enhancements to a major release. The classification of major and minor enhancements is at the discretion of FIS.
An optional <bug_fix_level> is an upper-case letter indicating bug fixes but no new enhancements. Note that GT.M is built monolithically and never patched. Even though a bug fix release has only bug fixes, it should be treated as a new GT.M release and installed in a separate directory.
<OS> is the host operating system name.
<architecture> is the hardware architecture for which the release of GT.M is compiled. Note that GT.M retains it original names for continuity even if vendor branding changes, for example, "RS6000".
M routines cannot modify $ZVERSION.
![[Caution]](../common/images/caution.jpg) | Warning |
|---|---|
GT.M treats $ZVERSION as a literal at compile time. Therefore, always compile with the same version as that used at runtime. |
Example:
GTM>w $zversion GT.M V6.0-003 Linux x86_64
This example displays the current version identifier for GT.M.
