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logger.c, logger.1:
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usr.bin/logger/logger.1
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usr.bin/logger/logger.1
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.\" Copyright (c) 1983, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)logger.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt LOGGER 1
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.Os BSD 4.3
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.Sh NAME
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.Nm logger
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.Nd make entries in the system log
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.Sh SYNOPSIS
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.Nm logger
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.Op Fl is
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.Op Fl f Ar file
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.Op Fl p Ar pri
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.Op Fl t Ar tag
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.Op Ar message ...
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.Sh DESCRIPTION
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.Nm Logger
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provides a shell command interface to the
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.Xr syslog 3
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system log module.
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.Pp
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Options:
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.Pp
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.Bl -tag -width "message"
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.It Fl i
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Log the process id of the logger process
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with each line.
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.It Fl s
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Log the message to standard error, as well as the system log.
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.It Fl f Ar file
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Log the specified file.
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.It Fl p Ar pri
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Enter the message with the specified priority.
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The priority may be specified numerically or as a ``facility.level''
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pair.
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For example, ``\-p local3.info'' logs the message(s) as
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.Ar info Ns rmational
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level in the
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.Ar local3
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facility.
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The default is ``user.notice.''
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.It Fl t Ar tag
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Mark every line in the log with the specified
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.Ar tag .
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.It Ar message
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Write the message to log; if not specified, and the
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.Fl f
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flag is not
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provided, standard input is logged.
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.El
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.Pp
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The
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.Nm logger
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utility exits 0 on success, and >0 if an error occurs.
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.Sh EXAMPLES
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.Bd -literal -offset indent -compact
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logger System rebooted
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logger \-p local0.notice \-t HOSTIDM \-f /dev/idmc
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.Ed
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.Sh SEE ALSO
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.Xr syslog 3 ,
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.Xr syslogd 8
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.Sh STANDARDS
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The
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.Nm logger
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command is expected to be
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.St -p1003.2
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compatible.
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192
usr.bin/logger/logger.c
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192
usr.bin/logger/logger.c
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/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1983, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#define SYSLOG_NAMES
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#include <syslog.h>
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int decode __P((char *, CODE *));
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int pencode __P((char *));
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void usage __P((void));
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/*
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* logger -- read and log utility
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*
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* Reads from an input and arranges to write the result on the system
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* log.
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*/
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, logflags, pri;
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char *tag, buf[1024];
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tag = NULL;
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pri = LOG_NOTICE;
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logflags = 0;
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while ((ch = getopt(argc, argv, "f:ip:st:")) != EOF)
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switch((char)ch) {
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case 'f': /* file to log */
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if (freopen(optarg, "r", stdin) == NULL) {
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(void)fprintf(stderr, "logger: %s: %s.\n",
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optarg, strerror(errno));
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exit(1);
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}
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break;
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case 'i': /* log process id also */
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logflags |= LOG_PID;
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break;
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case 'p': /* priority */
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pri = pencode(optarg);
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break;
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case 's': /* log to standard error */
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logflags |= LOG_PERROR;
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break;
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case 't': /* tag */
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tag = optarg;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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/* setup for logging */
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openlog(tag ? tag : getlogin(), logflags, 0);
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(void) fclose(stdout);
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/* log input line if appropriate */
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if (argc > 0) {
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register char *p, *endp;
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int len;
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for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
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len = strlen(*argv);
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if (p + len > endp && p > buf) {
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syslog(pri, "%s", buf);
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p = buf;
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}
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if (len > sizeof(buf) - 1)
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syslog(pri, "%s", *argv++);
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else {
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if (p != buf)
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*p++ = ' ';
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bcopy(*argv++, p, len);
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*(p += len) = '\0';
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}
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}
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if (p != buf)
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syslog(pri, "%s", buf);
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} else
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while (fgets(buf, sizeof(buf), stdin) != NULL)
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syslog(pri, "%s", buf);
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exit(0);
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}
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/*
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* Decode a symbolic name to a numeric value
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*/
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int
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pencode(s)
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register char *s;
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{
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char *save;
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int fac, lev;
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for (save = s; *s && *s != '.'; ++s);
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if (*s) {
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*s = '\0';
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fac = decode(save, facilitynames);
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if (fac < 0) {
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(void)fprintf(stderr,
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"logger: unknown facility name: %s.\n", save);
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exit(1);
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}
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*s++ = '.';
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}
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else {
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fac = 0;
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s = save;
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}
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lev = decode(s, prioritynames);
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if (lev < 0) {
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(void)fprintf(stderr,
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"logger: unknown priority name: %s.\n", save);
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exit(1);
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}
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return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
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}
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int
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decode(name, codetab)
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char *name;
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CODE *codetab;
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{
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register CODE *c;
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if (isdigit(*name))
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return (atoi(name));
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for (c = codetab; c->c_name; c++)
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if (!strcasecmp(name, c->c_name))
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return (c->c_val);
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return (-1);
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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"logger: [-is] [-f file] [-p pri] [-t tag] [ message ... ]\n");
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exit(1);
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}
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