On a computer running Debian 10, in a number of directories a subdirectory "history" has mysteriously appeared containing a file history.db. There are 11 of these history.db files in various places in my home directory; cmp reveals that they are all identical. Each is an "SQLite 3.x database, last written using SQLite version 3027002." Each is a 12288-byte file containing, in addition to a bunch of special characters, the words: "tableversionversionCREATE TABLE version ( version VARCHAR NOT NULL, datfile VARCHAR UNIQUE NOT NULL)-Andexsqlite_autoindex_version_1version." In some (but not all) cases the timestamp on history/history.db matches the timestamp of some file I was editing with vim 8.1.1401 in the same directory containing the history subdirectory--for whatever that's worth--but I can't reproduce the phenomenon by editing similar files with vim. All history/history.db files appeared since upgrading from Debian 9. I couldn't find anything relevant in the log files around the timestamps of the mystery files. Does anyone know what might be causing this? As far as I can tell it's harmless, but it is a bit disquieting when files start appearing that I didn't intentionally create. Regards, Greg Marks
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