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470 Linux Base

Mandatory arguments to long options are mandatory for short

options too.

--retry keep trying to open a file even if it is inaccessible when

tail starts or if it becomes inaccessible later; useful when

following by name, i.e., with --follow=name

-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

-F same as --follow=name --retry

-n, --lines=N output the last N lines, instead of the last 10

--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)

--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 for approximately S seconds

(default 1.0) 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 plus sign (+),

print beginning with the Nth item from the start of each file; otherwise, print

the last N items in the file. N may have a multiplier suffix: b 512, k 1024, m

1024*1024.

With --follow (-f), tail defaults to following the file descriptor, which means

that even if a tail’ed file is renamed, tail continues to track its end. This

default behavior is not desirable to track the actual name of the file, not

the file descriptor (for example, log rotation). To track the actual name

of the file, use --follow=name. This causes tail to track the named file by

reopening it periodically to see if it was removed and recreated by another

program.

Report bugs to <[email protected]>.[nortel@bvwucm nortel]$

Nortel Communication Server 1000

Troubleshooting Guide for Distributors

NN43001-730 02.02 31 December 2009

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