How linux looks at the last few lines of data in a file

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In linux, you can use the tail command to view the last few lines of data, which is used to view the tail of the file; simply execute the "tail-n line value filename" command to view the specified number of lines of data from the end of the file.

The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Linux looks at the last few lines of data in the file

Use the tail command

To view the last few lines of data in the file, you can use:

Tail-n row value filename

Example: tail-n 20 filename

Can display the last 20 lines of filename

Description:

The tail command is used to view the tail content in the file. The tail command displays the last 10 lines of the specified file on the screen by default. If more than one file is given, each file displayed is preceded by a file name title. If no file is specified or the file name is "-", standard input is read.

Note: if the N value indicating the number of bytes or lines is preceded by a "+" sign, it is displayed from the N item at the beginning of the file instead of the last N item of the file. The N value can be followed by a suffix: B for 512, k for 1024, m for 1, 048576 (1m).

Syntax format:

Tail [parameters] [file]

Parameters:

-f loop read

-Q does not display processing information

-v displays detailed processing information

Number of bytes displayed by-c

-n displays the contents of the last n lines of the file

-- pid=PID is used with-f to indicate that it ends after the process ID,PID dies.

-Q,-- quiet,-- silent never outputs the first part of the given file name

-s,-- sleep-interval=S is used with-f to indicate dormancy for S seconds at intervals of each iteration.

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