tail man page on UnixWare
[printable version]
TAIL(1) FSF TAIL(1)
NAME
tail - output the last part of files
SYNOPSIS
tail [OPTION]... [FILE]...
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.
--retry
keep trying to open a file even if it is
inaccessible when tail starts or if it becomes inaccessible
later -- useful only with -f
-c, --bytes=N
output the last N bytes
-f, --follow[={name|descriptor}] output appended data as the
file grows;
-f, --follow, and --follow=descriptor are equivalent
-n, --lines=N
output the last N lines, instead of the last 10
--max-unchanged-stats=N see the texinfo documentation
(the default is 5)
--max-consecutive-size-changes=N see the texinfo documentation
(the default is 200)
--pid=PID
with -f, terminate after process ID, PID dies
-q, --quiet, --silent
never output headers giving file names
-s, --sleep-interval=S
with -f, sleep S seconds between iterations
-v, --verbose
always output headers giving file names
--help display this help and exit
--version
output version information and exit
If the first character of N (the number of bytes or lines) is a `+',
print beginning with the Nth item from the start of each file, other‐
wise, print the last N items in the file. N may have a multiplier suf‐
fix: b for 512, k for 1024, m for 1048576 (1 Meg). A first OPTION of
-VALUE or +VALUE is treated like -n VALUE or -n +VALUE unless VALUE has
one of the [bkm] suffix multipliers, in which case it is treated like
-c VALUE or -c +VALUE.
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 descrip‐
tor (e.g., log rotation). Use --follow=name in that case. That causes
tail to track the named file by reopening it periodically to see if it
has been removed and recreated by some other program.
REPORTING BUGS
Report bugs to <bug-textutils@gnu.org>.
SEE ALSO
The full documentation for tail is maintained as a Texinfo manual. If
the info and tail programs are properly installed at your site, the
command
info tail
should give you access to the complete manual.
COPYRIGHT
Copyright © 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
GNU textutils 2.0 August 1999 TAIL(1)
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