What is a Log File.
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an ASCII file that contains an entry for each user
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File which is created and maintained by a server of activity performed by it.
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short python program that prints the list of all files inside the current directory
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File which is created and maintained by the operating system
A log file is a file created and maintained by a server (or application) to record the activities performed by it. Option A describes system-wide user logs, not application logs. Option C is a program, not a log file. Option D describes system-level logs, not server/application logs.
A log file is a record automatically created and updated by a server (or system/application) to track events or activity as they happen, such as requests handled, errors encountered, or user actions. This is distinct from a generic user list, an arbitrary script, or simply anything the operating system happens to maintain — the defining feature is that it's an ongoing activity record kept by the server/process itself.