Drop hurd specific dependency on libc0.3 (>= 2.3.2.ds1-12). It is
[sysvinit.git] / man / bootlogd.8
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18 .TH BOOTLOGD 8 "Jul 21, 2003" "" "Linux System Administrator's Manual"
19 .SH NAME
20 bootlogd \- record boot messages
21 .SH SYNOPSIS
22 .B /sbin/bootlogd
23 .RB [ \-c ]
24 .RB [ \-d ]
25 .RB [ \-r ]
26 .RB [ \-s ]
27 .RB [ \-v ]
28 .RB [ " -l logfile " ]
29 .RB [ " -p pidfile " ]
30 .SH DESCRIPTION
31 \fBBootlogd\fP runs in the background and copies all strings sent to the
32 \fI/dev/console\fP device to a logfile. If the logfile is not accessible,
33 the messages will be kept in memory until it is.
34 .SH OPTIONS
35 .IP \fB\-d\fP
36 Do not fork and run in the background.
37 .IP \fB\-c\fP
38 Attempt to write to the logfile even if it does not yet exist.
39 Without this option,
40 .B bootlogd
41 will wait for the logfile to appear before attempting to write to it.
42 This behavior prevents bootlogd from creating logfiles under mount points.
43 .IP \fB\-r\fP
44 If there is an existing logfile called \fIlogfile\fP rename it to
45 \fIlogfile~\fP unless \fIlogfile~\fP already exists.
46 .IP \fB\-s\fP
47 Ensure that the data is written to the file after each line by calling
48 .BR fdatasync (3).
49 This will slow down a
50 .BR fsck (8)
51 process running in parallel.
52 .IP \fB\-v\fP
53 Show version.
54 .IP "\fB\-l\fP \fIlogfile\fP"
55 Log to this logfile. The default is \fI/var/log/boot\fP.
56 .IP "\fB\-p\fP \fIpidfile\fP"
57 Put process-id in this file. The default is no pidfile.
58 .SH BUGS
59 Bootlogd works by redirecting the console output from the console device.
60 (Consequently \fBbootlogd\fP requires PTY support in the kernel configuration.)
61 It copies that output to the real console device and to a log file.
62 There is no standard way of ascertaining the real console device
63 if you have a new-style \fI/dev/console\fP device (major 5, minor 1)
64 so \fBbootlogd\fP parses the kernel command line looking for
65 \fBconsole=...\fP lines and deduces the real console device from that.
66 If that syntax is ever changed by the kernel, or a console type is used that
67 \fBbootlogd\fP does not know about then \fBbootlogd\fP will not work.
68
69 .SH AUTHOR
70 Miquel van Smoorenburg, miquels@cistron.nl
71 .SH "SEE ALSO"
72 .BR dmesg (8), fdatasync (3).