The tail command has several options that allow you to customize its behavior. Here are some commonly used options:
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-n: Specify the number of lines to display from the end of the file. For example,tail -n 20 filenameshows the last 20 lines. -
-c: Display a specific number of bytes from the end of the file. For example,tail -c 100 filenameshows the last 100 bytes. -
-f: Follow the file in real-time, displaying new lines as they are added. For example,tail -f filename. -
-q: Suppress the output of headers when multiple files are being monitored. This is useful when you want to view the output without file names. -
-s: Specify the sleep interval in seconds between checks when using the-foption. For example,tail -f -s 2 filenamechecks for new lines every 2 seconds. -
--max-unchanged-stats: This option allows you to specify how many times to check for changes in the file before stopping if no changes are detected. -
--pid: Used with the-foption to specify a process ID.tailwill stop following the file when the specified process terminates.
These options can be combined to tailor the tail command to your specific needs when monitoring files.
