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What does the in the tail command do?
The tail command, as the name implies, print the last N number of data of the given input. By default it prints the last 10 lines of the specified files. If more than one file name is provided then data from each file is precedes by its file name.
How do you exit tail command?
In less , you can press Ctrl-C to end forward mode and scroll through the file, then press F to go back to forward mode again. Note that less +F is advocated by many as a better alternative to tail -f .
What is tail in CMD?
The tail command is a command-line utility for outputting the last part of files given to it via standard input. It writes results to standard output. By default tail returns the last ten lines of each file that it is given. It may also be used to follow a file in real-time and watch as new lines are written to it.
Is there a way to use the tail command?
Actually, you can dispense with the “-n”, and just use a hyphen “-” and the number. Make sure there are no spaces between them. Technically, this is an obsolete command form, but it is still in the man page, and it still works. You can have tail work with multiple files at once. Just pass the filenames on the command line:
When to use–follow = name in tail?
With –follow ( -f ), tail defaults to following the file descriptor, which means that even if a tail’ed file is renamed, tail will continue to track its end. This default behavior is not desirable when you really want to track the actual name of the file, not the file descriptor (e.g., log rotation). Use –follow = name in that case.
How can I have tail work on multiple files at once?
You can have tail work with multiple files at once. Just pass the filenames on the command line: A small header is shown for each file so that you know which file the lines belong to. The + (count from the start) modifier makes tail display lines from the start of a file, beginning at a specific line number.
What’s the default output of tail in Linux?
This page covers the GNU / Linux version of tail. By default, tail prints the last 10 lines of each file to standard output. If you specify more than one file, each set of output is prefixed with a header showing the file name. If no file is specified, or if file is a dash (” – “), tail reads from standard input.