вывести последнюю часть файлов (output the last part of files)
Имя (Name)
tail - output the last part of files
Синопсис (Synopsis)
tail [OPTION]... [FILE]...
Описание (Description)
Print the last 10 lines of each FILE to standard output. With
more than one FILE, precede each with a header giving the file
name.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short
options too.
-c, --bytes=[+]NUM
output the last NUM bytes; or use -c +NUM to output
starting with byte NUM of each file
-f, --follow[={name|descriptor}]
output appended data as the file grows;
an absent option argument means 'descriptor'
-F same as --follow=name --retry
-n, --lines=[+]NUM
output the last NUM lines, instead of the last 10; or use
-n +NUM to output starting with line NUM
--max-unchanged-stats=N
with --follow=name, reopen a FILE which has not
changed size after N (default 5) iterations to see if it
has been unlinked or renamed (this is the usual case of
rotated log files); with inotify, this option is rarely
useful
--pid=PID
with -f, terminate after process ID, PID dies
-q, --quiet, --silent
never output headers giving file names
--retry
keep trying to open a file if it is inaccessible
-s, --sleep-interval=N
with -f, sleep for approximately N seconds (default 1.0)
between iterations; with inotify and --pid=P, check
process P at least once every N seconds
-v, --verbose
always output headers giving file names
-z, --zero-terminated
line delimiter is NUL, not newline
--help display this help and exit
--version
output version information and exit
NUM may have a multiplier suffix: b 512, kB 1000, K 1024, MB
1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and
so on for T, P, E, Z, Y. Binary prefixes can be used, too:
KiB=K, MiB=M, and so on.
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. That causes tail to track the named
file in a way that accommodates renaming, removal and creation.
