Accommodate the new Shell and Utilities version of the zlsof utility

Description: Before z/OS V2R1, the zlsof utility was obtained from the Tools and Toys section of the z/OS UNIX website. Starting in z/OS V2R1, Shell and Utilities support of the zlsof utility has been added. The supported version differs from the Tools and Toys version in a number of ways. For example, the new zlsof version includes support for displaying file lock holders and waiters when the byte range lock manager is used.:

Element or feature:

z/OS UNIX.

When change was introduced:

z/OS V2R1.

Applies to migration from:

z/OS V1R13 and z/OS V1R12.

Timing:

Before installing z/OS V2R1.

Is the migration action required?

Yes, if you currently use the Tools and Toys version of the zlsof utility.

Target system hardware requirements:

None.

Target system software requirements:

None.

Other system (coexistence or fallback) requirements:

None.

Restrictions:

None.

System impacts:

None.

Related IBM Health Checker for z/OS check:

None.

Steps to take: Look for current use of the Tools and Toys version of zlsof. If there is no current use of the Tools and Toys version of zlsof, then no actions or changes are required.

If there is current usage of the Tools and Toys version of zlsof, determine if the command is in /bin, or in another directory. Also, determine if you want to preserve the Tools and Toys version in addition to the officially shipped version. Note that zlsof can also reside in data sets where rexx execs can be run.

If you want to preserve the Tools and Toys version, ensure that you save it into a directory that z/OS V2R1 will not install into. z/OS V2R1 provides zlsof in the /bin directory.
If you do not want to preserve the Tools and Toys version and it is in /bin, then the installation of z/OS V2R1 automatically replaces the Tools and Toys version with the new officially supported version. If the Tools and Toys version is not in /bin, remove it from its current location.

Reference information: For details about the zlsof command, see z/OS UNIX System Services Command Reference