OA65879: Support for shlock and flock utilities on z/OS

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• Support for shlock and flock utilities on z/OS
  
  shlock is a command to create and manage shell locks. It
  provides a way for shell scripts to implement simple locking
  mechanisms and helps prevent multiple instances of a script
  from running simultaneously and potentially conflicting with
  each other.
  
  flock is a command to manage locks from within shell scripts
  or the command line. It provides a method for user to manipulate
  file locks and it allows multiple processes to read and/or
  write to a file without corrupting its contents. This utility
  grants exclusive or shared access to a specified file or
  directory and ensures synchronization which is essential in
  multi-user and multi-tasking environments.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of z/OS Shells and Utilities           *
  ****************************************************************
  * PROBLEM DESCRIPTION: New z/OS Shells and Utilities functi-   *
  *                      onality is being added in support of    *
  *                      z/OS Container Platform technology.     *
  ****************************************************************
  * RECOMMENDATION: Install this PTF and re-IPL the system to    *
  *                 improve z/OS UNIX functionality.             *
  ****************************************************************
  This PTF adds z/OS Shells and Utilities functionality to
  enable support for the shlock and flock utilities.
  
  shlock is a command to create and manage shell locks. It
  provides a way for shell scripts to implement simple locking
  mechanisms and helps prevent multiple instances of a script
  from running simultaneously and potentially conflicting with
  each other.
  
  flock is a command to manage locks from within shell scripts
  or the command line. It provides a method for user to manipulate
  file locks and it allows multiple processes to read and/or
  write to a file without corrupting its contents. This utility
  grants exclusive or shared access to a specified file or
  directory and ensures synchronization which is essential in
  multi-user and multi-tasking environments.
  

Problem conclusion

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UJ97443 UJ97444

Modules/Macros

• FSUMXFLK FSUMXSLK
  

Fix information

• Fixed component name

  OPENMVS SHELL/U

• Fixed component ID

  5695SCPX2

Applicable component levels

• R7C0 PSY UJ97443

     UP25/07/02 P F507  

• R7E0 PSY UJ97444

     UP25/07/02 P F507  

Fix is available

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