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Checked into CVS. 

Added -o and -s options.
This commit is contained in:
hjp 1997-01-13 14:59:41 +00:00
parent a9cee145d7
commit 7b8d8db2da
3 changed files with 174 additions and 0 deletions
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22
prwtmp/GNUmakefile Normal file
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CC = gcc -Wall
INSTALL = /usr/local/bin/install
prwtmp:
install: $(ROOT)/usr/local/bin/prwtmp $(ROOT)/usr/local/man/man8/prwtmp.8
install_all:
$(MAKE) install ROOT=/nfs/wsrdb
$(MAKE) install ROOT=/nfs/wsrcom
$(MAKE) install ROOT=/nfs/wifosv
$(MAKE) install ROOT=/nfs/ihssv
$(MAKE) install ROOT=/nfs/wsrtest
$(ROOT)/usr/local/bin/%: %
$(INSTALL) $< $@
$(ROOT)/usr/local/man/man8/%.8: %.man
$(INSTALL) $< $@
clean:
rm prwtmp

104
prwtmp/prwtmp.c Normal file
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char prwtmp_c_rcs_id[] =
"$Id: prwtmp.c,v 1.1 1997-01-13 14:59:40 hjp Exp $";
/*
* prwtmp - print wtmp to stdout
*
* $Log: prwtmp.c,v $
* Revision 1.1 1997-01-13 14:59:40 hjp
* Checked into CVS.
* Added -o and -s options.
*
*/
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <utmp.h>
char *cmnd;
void usage(void) {
fprintf(stderr, "Usage: %s [-o] [-s start] [file]\n", cmnd);
exit(1);
}
int main (int argc, char **argv) {
FILE *fp;
struct utmp u;
char *filename = WTMP_FILE;
long off;
int print_offset = 0;
int c;
char *p;
cmnd = argv[0];
while ((c = getopt(argc, argv, "s:o")) != EOF) {
switch(c) {
case 's':
off = strtoul(optarg, &p, 0);
if (p == optarg || *p != '\0') usage();
break;
case 'o':
print_offset = 1;
break;
case '?':
usage();
default:
assert(0);
}
}
if (argc > optind) filename = argv[optind];
fp = fopen(filename, "rb");
if (!fp) {
fprintf(stderr, "%s: cannot open %s: %s\n",
cmnd, filename, strerror(errno));
exit(1);
}
if (fseek(fp, off, SEEK_SET) == -1) {
fprintf(stderr, "%s: cannot seek to %ld on %s: %s\n",
cmnd, off, filename, strerror(errno));
exit(1);
}
while (fread(&u, (int)sizeof(u), 1, fp) == 1) {
char tbuf[20];
if (print_offset) printf ("%8ld: ", off);
off += sizeof(u);
strftime(tbuf, (int)sizeof(tbuf), "%Y-%m-%d %H:%M:%S",
localtime(&u.ut_time));
printf("%s ", tbuf);
printf("%-*.*s ",
(int)sizeof(u.ut_user),
(int)sizeof(u.ut_user),
u.ut_user);
printf("%-*.*s ",
(int)sizeof(u.ut_id),
(int)sizeof(u.ut_id),
u.ut_id);
printf("%-*.*s ",
(int)sizeof(u.ut_line),
(int)sizeof(u.ut_line),
u.ut_line);
printf("%5d ", (int)u.ut_pid); /* PID is typically < 30000 */
printf("%5d ", (int)u.ut_type); /* short on HP-UX */
printf("%5d ", (int)u.ut_exit.e_termination); /* short on HP-UX */
printf("%5d ", (int)u.ut_exit.e_exit); /* short on HP-UX */
printf("%-*.*s ",
(int)sizeof(u.ut_host),
(int)sizeof(u.ut_host),
u.ut_host);
printf("%08lx", u.ut_addr);
printf("\n");
}
return 0;
}

48
prwtmp/prwtmp.man Normal file
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.\" $Header: /usr/local/src/master/simple/prwtmp/prwtmp.man,v 1.1 1997-01-13 14:59:41 hjp Exp $
.TH prwtmp 8
.SH NAME
prwtmp \- print contents of wtmp file
.SH SYNOPSIS
.C prwtmp
.RC [ \-o ]
.RC [ \-s start ]
.RC [ file ]
.SH DESCRIPTION
.C prwtmp
interpretes
.I file
(default is the system wtmp file, normally /etc/wtmp, /var/log/wtmp, or
/var/adm/wtmp) as a
wtmp file and prints one line to stdout for each record.
If the
.B \-o
Option is given, each record is preceded by a decimal byte offset.
If the
.B -s
Option is given, processing starts at the given byte offset instead of
the beginning of the file.
.SH RETURN VALUE
Exit values are:
.RS 3
.TP 8
.B \00
Successful completion.
.PD 0
.TP
.B >0
Error condition occurred.
.RE
.PD
.SH FILES
.TP
.B /etc/wtmp
.B /var/adm/wtmp
.B /var/log/wtmp
Default wtmp file (depends on OS).
.SH BUGS
None known. There are a few improvements planned, though:
An option to print the file in reverse (like last(1M), but without
coalescing matching records). Some way to select records or columns.
NLS support would be nice, too.
.SH SEE ALSO
last(1M)