12-13-2000
I would loke to read the WTMP file. This is a binary file in the /var/logs directory. Is there any utility which will convert this binary file to ASCII format?
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Here's a usefull perl script to trim the wtmp file,
in case it got too big, which happens sometimes, or got curropted (which also happens often).
You could learn from here how to parse the wtmp file...
but of course for just reading its content always simply use "last" like Neo said....
... (0 Replies)
Discussion started by: me2unix
0 Replies
2. UNIX for Dummies Questions & Answers
When I type last oracle I get dates from Nov 28, 2000 all the way back to the beginning of time it seems. The 11-28-2000 entry states that Oracle is still logged in, but if you type a who, it shows only 1 entry - the currently logged in user (Me as oracle), but I logged in only minutes ago - and... (4 Replies)
Discussion started by: cuppjr
4 Replies
3. UNIX for Dummies Questions & Answers
Hi, is it ok if i delete wtmp on HPUX 11 under /var/adm
It is filling up that filesystem
Cheers (2 Replies)
Discussion started by: dsharples
2 Replies
4. UNIX for Dummies Questions & Answers
I have AIX5.1
I have been trying to learn how to truncate the /var/adm/wtmp file.
I have seen several things on google actually but don't quite understand. I also searched your forums but couldn't find it.
one says this ">/var/adm/wtmp
Is that all I do?
I have a seperate question also. I was... (1 Reply)
Discussion started by: rocker40
1 Replies
5. Red Hat
Hi,
I am using redhat AS 3. Recently, I was asked to implement a security control on the OS: to change ownership of /var/log/wtmp to root:sys and permission to 600. However, when I made the change and reboot the machine, everything was reverted. How come? Please help.
The following is the... (1 Reply)
Discussion started by: voa2mp3
1 Replies
6. AIX
Hello everyone
I have a problem with the file wtmp that is on /var/adm
This file was not on this directory (adm).
I try creating a new file with the correct rights (644) and owner (adm:adm)
but It doesnt work.
If I type the last command i get this
last
ora10g ... (4 Replies)
Discussion started by: lo-lp-kl
4 Replies
7. AIX
Hello,
Is there a difference between the following commands besides consider the file permissions?
/usr/sbin/acct/nulladm /var/adm/wtmp
>/var/adm/wtmp
cat /dev/null >/var/adm/wtmp
Today I tried the second command and it worked... (2 Replies)
Discussion started by: x_adm
2 Replies
8. Red Hat
Hi,
Can anybody explain wtmp output fields?
A dir was created at 7:11pm and I wanted to find out who was logged in at that time but as you can see there is no ip address listed when I run utmpdump against the wtmp file.....
R,
D. (1 Reply)
Discussion started by: Duffs22
1 Replies
9. AIX
Anyone got experience where wtmp logs get truncated everyday? Though sulog, failedlogin and lastlog seems to be fine.
The server uptime is 18 days running on AIX 5.3. Sorry this seems to be a generic questions but never really encountered before. (6 Replies)
Discussion started by: depam
6 Replies
LEARN ABOUT CENTOS
ncab2clf
ncab2clf(1) User Commands ncab2clf(1)
NAME
ncab2clf - convert binary log file to Common Log File format
SYNOPSIS
/usr/bin/ncab2clf [-Dhv] [-i input-file] [-o output-file] [-b size] [-n number] [-s datetime]
DESCRIPTION
The ncab2clf command is used to convert the log file generated by the Solaris Network Cache and Accelerator ("NCA") from binary format, to
Common Log File ("CLF") format. If no input-file is specified, ncab2clf uses stdin. If no output-file is specified, the output goes to std-
out.
OPTIONS
-b Specifies the binary-log-file blocking in kilobytes; the default is 64 Kbyte.
-D Specifies that direct I/O be disabled.
-h Prints usage message.
-i input-file Specifies the input file.
-n number Output number CLF records.
-o output-file Specifies the output file.
-s datetime Skip any records before the date and time specified in datetime. You can specify the date and time in CLF format or in the
format specified by the touch(1) utility. CLF format is the dominant format, so ncab2clf first analyzes datetime assuming
CLF.
-v Provides verbose output.
EXAMPLES
Example 1: Converting a Binary File to a Common Log File Format
The following example converts the binary file /var/nca/logs/nca.blf to a file /var/nca/logs/nca.clf, which is in Common Log File format.
example% ncab2clf -D -i /var/nca/logs/nca.blf -o /var/nca/logs/nca.clf
Example 2: Converting Multiple Log Files
The following script may be used to convert multiple log files. The directory designated by "*" must only contain log files.
!/bin/ksh
for filename in *
do
ncab2clf -D < $filename > $filename.clf
done
Example 3: Using -s and -n on a Raw Device
The following example shows how ncab2clf can be used on a raw device. If not using the -n option, the default is to convert all records
from the starting location to the end of the file. The date and time specified with -s, below, is in CLF format.
example% ncab2clf -s '10/Apr/2001:09:23:13' -n 100 < /dev/dsk/c2t1d0s6
EXIT STATUS
The following exit values are returned:
0 The file converted successfully
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWncau |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
nca(1), ncakmod(1), nca.if(4), ncakmod.conf(4), ncalogd.conf(4), attributes(5)
System Administration Guide: IP Services
NOTES
The binary log files generated by NCA can become very large. When converting these large binary files, use the -b option to the ncab2clf
command to help performance.
Direct I/O is a benefit to the user if the data being written does not come in as large chunks. However, if the user wishes to convert the
log file in large chunks using the -b option, then direct I/O should be disabled by using the -D option.
SunOS 5.10 28 Sep 2001 ncab2clf(1)