1.\" $OpenBSD: syslogc.8,v 1.8 2008/09/10 22:17:33 sobrado Exp $ 2.\" 3.\" Copyright (c) 2004 Damien Miller 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.Dd $Mdocdate: September 10 2008 $ 17.Dt SYSLOGC 8 18.Os 19.Sh NAME 20.Nm syslogc 21.Nd collect messages from syslog memory buffer 22.Sh SYNOPSIS 23.Nm syslogc 24.Op Fl Ccfo 25.Op Fl s Ar reporting_socket 26.Ar logname 27.Nm syslogc 28.Fl q 29.Sh DESCRIPTION 30.Nm 31collects messages from the 32.Xr syslogd 8 33memory buffer specified by the 34.Ar logname 35argument. 36.Pp 37For 38.Nm 39to work, 40.Xr syslogd 8 41must be configured with one or more memory buffer logs (see 42.Xr syslog.conf 5 43for details) and have a reporting socket location specified on the 44commandline (using the 45.Fl s 46option to 47.Xr syslogd 8 ) . 48.Pp 49By default, 50.Nm 51will query the specified log and return it to standard output. 52.Pp 53The options are as follows: 54.Bl -tag -width Ds 55.It Fl C 56Request that the log buffer be cleared without reading it. 57.It Fl c 58Request that the log buffer be cleared once it has been read. 59.It Fl f 60Print out the last 10 lines and read from the buffer continuously. 61Like the 62.Fl f 63option in 64.Xr tail 1 . 65.It Fl o 66Check whether the specified log has overflowed. 67If the log has overflowed, then a message will be printed to 68.Xr stdout 4 69and the exit status will be set to 1. 70.It Fl q 71Request a list of available logs. 72If a log has overflowed an asterisk 73.Pq Ql * 74will be appended to its name. 75.It Fl s Ar reporting_socket 76Specify alternate reporting socket location (the default is 77.Pa /var/run/syslogd.sock ) . 78.El 79.Sh SEE ALSO 80.Xr syslog 3 , 81.Xr syslog.conf 5 , 82.Xr syslogd 8 83.Sh HISTORY 84The 85.Nm 86command first appeared in 87.Ox 3.5 . 88.Sh CAVEATS 89The buffer space used for writing logs through the socket is limited. 90Thus it is possible to lose logs when running in continuous mode. 91Losses are reported on standard error. 92