PVCS
In a land of software, long ago,
PVCS Version Manager started to grow.
With source code files, it would play,
Keeping track of changes, day by day.
Locking approach, it chose to use,
Concurrency control, it wouldn't lose.
No merge operator, but fear not,
A separate merge command it's got.
Multiple users, it could support,
Simultaneously editing, without a tort.
Creating branches, for each to see,
Parallel histories, for all to be.
Don Kinzer, the creator, we must praise,
Polytron published, in those early days.
Through mergers and acquisitions, it did roam,
Sage Software, Intersolv, finding a new home.
Serena Software, the final embrace,
Silver Lake Partners, took its place.
Micro Focus International, the story unfolds,
Became the custodian, as the tale beholds.
So children, remember PVCS with delight,
A version manager, shining so bright.
In the world of software, it made its mark,
Keeping code safe, like a shining arc.
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