To improve efficiency and reduce duplication and inconsistency, GT.M is closely integrated with the host operating system environment. With GT.M you can gain access to the operating system facilities to examine:
System information, such as quotas and SIDs
Jobs and processes
Directories and files
Devices
Messages
Privileges
The following table summarizes the GT.M operating system interface facilities.
|
Operating System Interface Facilities | |
|---|---|
|
EXTENSION |
EXPLANATION |
|
ZSYstem |
Provides access to the shell. |
|
$ZMessage() |
Translates an error condition code into text form. |
|
$ZCMdline |
Contains a string value specifying the "excess" portion of the command line that invoked the GT.M process. |
|
$ZJob |
Holds the pid of the process created by the last JOB command performed by the current process. |
|
$ZPARSE() |
Parses a UNIX filename. |
|
$ZSEARCH() |
Searches for one or more UNIX files. |
|
$ZSYstem |
Contains the status code of the last ZSYSTEM. |
|
$ZTRNLNM() |
Translates an environment variable. |
|
$ZDIRectory |
Contains current working directory. |
![[Note]](../common/images/note.jpg) | NOTE: |
|---|---|
The OS services accessed by GT.M commonly treat a <NUL> character as a terminator therefore any in cases where application information passes to the OS as arguments an embedded <NUL> may cause non-obvious behavior. |
