06-24-2008
Quote:
Originally Posted by
ennstate
I could do that with "exec", but I couldn't get that work to write to a file and stdout simultaneously,
...
Please try exec options,
Thanks,
Nagarajan G
Thank you Nagarajan G!!
Exec works perfect to redirect from inside!
I try to get the print-out simultaneously and trying to do it with 'tail -f'
And I've get rock-n-roll:
to start 'tail' need and continue - need to run tail background (... & )
to stop 'tail' when it is done - need to know it's PID
but it is bad idea to kill 'tail' on end of screept - it could exit in a midle
so need to run monitoring of the script to stop the tail rigt after t'tail' start
Is this seems doable? Because by now I have some problem to get PID and kill it. (Actually I did it from outside script and get mess with PIDs)
Any oppinion?
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LEARN ABOUT DEBIAN
plan9-tail
TAIL(1) General Commands Manual TAIL(1)
NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c nbytes ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or bytes, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and bytes from 0.
Tail is ignorant of UTF.
TAIL(1)