Uruchomienie, wykonanie: tail [options] [files]
Jak działa TAIL, co robi TAIL: 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 TAIL:
-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.
-F Identical to --follow=name --retry.
--help Print a help message and exit.
-n num, --lines=num Print the last num lines.
--max-unchanged-stats=num 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).
--pid=pid Used with -f to end when process ID pid dies.
-q, --quiet, --silent Suppress filename headers.
--retry 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.
--version Print version information and then exit.
- Co znaczy :
- Definicja See groff co znaczy.
- Co znaczy :
- Definicja Accept output from another command and send it both to standard output and to files (like a T or fork in the road krzyżówka.
- Co znaczy :
- Definicja Display system load average in graph format. If tty is specified, print it to that terminal co to jest.
- Co znaczy :
- Definicja administration command. Reads and manipulates packet capture files created by tcpdump -w . Based on timestamps, extract portions of or piece together files. Display all packets between the given słownik.
- Co znaczy :
- Definicja topological sort on partially ordered strings in the specified file. Multiple strings on a line are separated by spaces, where each line indicates a partial ordering. The fully ordered results are czym jest.
Użycie TAIL zastosowanie komendy na linii poleceńw Słownik T .
