komenda tail użycie tail co to jest
Jak użyć TAIL? Definicja w konsoli input if - is specified) on standard output. If more than one.
Znaczenie komenda tail użycie tail definicja.

Czy przydatne?

Komenda/polecenie: Jak użyć tail

Uruchomienie, wykonanie: tail [options] [files]

Jak działa, co robi: Print the last 10 lines of each named file (or standard input if - is specified) on standard output. If more than one file is specified, the output includes a header at the beginning of each file:

= =>filename<= =

For options that take the number of bytes or lines as an argument, you prepend a plus sign (+) to num to begin printing with the numth item. These options can also specify a block size:


512 bytes


1 kilobyte


1 megabyte

Dostępne opcje, wywołanie: -c num, --bytes num

Print the last num bytes.

-f, --follow[=name|descriptor]

Don't quit at the end of file; "follow" file as it grows and end when the user presses Ctrl-C. Following by file descriptor is the default, so -f, --follow, and --follow=descriptor are equivalent. Use --follow=name to track the actual name of a file even if the file is renamed, as with a rotated logfile.


Identical to --follow=name --retry.


Print a help message and exit.

-n num, --lines=num

Print the last num lines.


Used with --follow=name to reopen a file whose size hasn't changed after num iterations (default 5), to see if it has been unlinked or renamed (as with rotated logfiles).


Used with -f to end when process ID pid dies.

-q, --quiet, --silent

Suppress filename headers.


With -f, keep trying to open a file even if it isn't accessible when tail starts or if it becomes inaccessible later.

-s sec, --sleep-interval=sec

With -f, sleep approximately sec seconds between iterations. Default is 1 second.

-v, --verbose

With multiple files, always output the filename headers.


Print version information and then exit.

Użycie TAIL zastosowanie komendy na linii poleceńw Słownik T .