Table 1 lists the new and changed environment variables. For details, see z/OS UNIX System Services Planning.
| Environment variable | Release | Description | Reason for change |
|---|---|---|---|
| _BPXK_AUTOCVT | z/OS® V2R1 | Updated: A new option activates the automatic conversion of files that are supported by Unicode Services. | Unicode exploitation |
| _BPXK_DISABLE_SHLIB | z/OS V1R13 | New: Specifies whether normal system shared library program processing is enabled or disabled for a process. | Release enhancement |
| _BPXK_INET_FASTPATH | z/OS V2R1 | Deleted. | Removal of support |
| _BPXK_PCCSID | z/OS V2R1 | New: Identifies the program CCSID for the running thread or user. | Unicode exploitation |
| _BPXK_TECHNIQUE | z/OS V2R1 | New: Specifies the Unicode Services conversion technique to use for the I/O conversion operation. | Unicode exploitation |
| _BPXK_TIMEOUT | z/OS V2R1 | New: Specifies whether the process should time out. | Logging off unattended terminals |
| _BPXK_UNICODE_TECHNIQUE | z/OS V2R1 | New: Specifies the Unicode Services conversion technique to use for the I/O translation operation. | Unicode exploitation |
| _BPXK_UNICODE_SUB | z/OS V2R1 | New: Specifies the Unicode Services substitution action to take for I/O translation operation when a source character is not convertible to a target character. | Unicode exploitation |
| _BPXK_UNICODE_MAL | z/OS V2R1 | New: Specifies the Unicode Services substitution action to take for the translation operation when a source character is malformed. | Unicode exploitation |