.TH bootlog 8 "Dec 28, 2009"
.SH NAME
bootlog \- write stdout/stderr of a program to file
.SH SYNOPSIS
.B bootlog
[-12ctar] logsize logfile program [arguments]

.SH DESCRIPTION
.B bootlog
is used to start a program and write stdout/stderr to a disk file.
This works also before mouning any file systems.

.B bottlog
is designed to log the output of scripts/services at boot time,
before mounting any file system.  This is typical for
system init.

.B bootlog 
expects that when the program exits, the
.I logfile 
is writable!

.SH OPTIONS
.TP
\-1
log only stdout
.TP
\-2
log only stderr;  default is to log stdout and stderr
.TP
\-c
create logfile
.TP
\-t
truncate logfile
.TP
\-a
append to logfile
.TP
\-r
replace old
.I logfile
with
.I logfile~
.TP
.I logsize
maximal size of output to be logged
.TP
.I logfile
disk file name
.TP
.I program
the name of the 
.I program 
to start 
.TP
.I arguments
additional arguments for
.I program

.SH WARNING
Use the option \-c to force creating of the 
.I logfile.

Actually the options \-c, \-a, \-t add O_CREAT, O_APPEND, O_TRUNC
flags to open(2) for
.I logfile

.SH EXAMPLE
bootlog -ctr 120000 /tmp/.sysinit.log /etc/rc.d/rc.sysinit

You will have the files
.I /tmp/.sysinit.log 
and
.I /tmp/.sysinit.log~

.SH ENVIRON
.B bootlog 
uses the variable PATH to start 
.I program  
.br
If PATH is undefined it uses PATH=/bin:/usr/bin

.SH AUTHOR
.B bootlog
is part of ninit package written by Nikola Vladov

.SH "SEE ALSO"
ninit(8), open(2)