Hi,
Is it possible to specify runlevel
from bootloader command line?
I would like to override settings from /etc/inittab
without changing it.
Thanks (2 Replies)
Is it possible to give multiple runlevel options during boot up.. When the Welcome screen appears, i want to give multiple runlevel options.. So the user can boot into any desired runlevel he wants.. Found this kinda interesting.. Any hints and solutions please? (2 Replies)
Hi,
I have a shell scripting. This will take 7 digit number in each line and add 7 digit number with next subsequent lines ( normal addition ).
Eg:
0000001
0000220
0001235
0000022
0000023
...........
.........
........
Like this i am having around 1500000 records. After adding... (23 Replies)
Ok, I am attempting to add a new program to startup during the runlevel 3. I am using Suse 10.
I made a script lets call it foostart and placed it in /etc/init.d. It has 777 permissions on the script.
I then created a link ln -s /etc/init.d/foostart /etc/init.d/rc3.d/S99foostart
But during... (9 Replies)
hi all
i have to run a script in run level 1 automatically i.e when i give init 1 from runlevel 3 that script should run after entering into runlevel 1.
where can i put that script so that it will run as i said above..???
something similar to rc.local but this will run in runlevel 3(... (1 Reply)
Hi,
I am trying with the following code to retrieve the runlevel of my Linux Ubuntu 8.04 system by reading the "utmp" database. But I am getting blank output. May I know what correction I should do inorder to make this program to work?
#include <stdio.h>
#include <stdlib.h>
#include... (1 Reply)
Hello everyone, I'm in need of some assistance. I'm currently enrolled in an introductory UNIX shell programming course and, well halfway through the semester, we are receiving our first actual assignment. I've somewhat realized now that I've fallen behind, and I'm working to get caught up, but for... (1 Reply)
Hi All,
I am using the below script which has awk command, but it is not returing the expected result. can some pls help me to correct the command.
The below script sample.ksh should give the result if the value of last 4 digits in the variable NM matches with the variable value DAT. The... (7 Replies)
Discussion started by: G.K.K
7 Replies
LEARN ABOUT DEBIAN
writetmp
WRITETMP(8) System Manager's Manual WRITETMP(8)NAME
writetmp - write special wtmp entries to a wtmp file.
SYNOPSIS
writetmp [-w wtmp|-] [-X[3|4]] [-u user] [-l line] [-h host] [-i id] [-p pid] [-t type] [-c comment] [--help] [--version] [entry-type]
DESCRIPTION
Writetmp is a utility to write special entries to a wtmp file. Useful as either a replacement for the functionality of the "halt -w" or
"reboot -w" commands which are normally run at shutdown time or to write special wtmp entries to an alternate wtmp file to which such
entries would normally not be written.
Under normal conditions radius radtwmp or tacacs accounting logs do not contain shutdown and boottime entries because the access control
software is not setup to take into account these events. In the case of a quick shutdown or server crash, the wtmp file(s) will lose
coherency. To avoid or minimize the amount of accounting error, it is necessary to write shutdown and boottime entries to such logs.
Also changes in time which are made manually with date or via the network with a program such as rdate are not reflected in the accounting
logs, which, if the time difference is severe can improperly account time for logins active during the time change.
If an entry-type is specified on the command line, the -u, -l, -h, -i, -p, -t and -c options are ignored as writetmp will fill in the user-
name, line, id, and host entries as required for that particular wtmp entry-type.
Writetmp understands the following entry types:
shutdown
used just prior to a normal system shutdown. Also accepts halt or reboot as aliases for shutdown.
boottime
used at system initialization time, to indicate the system is booting.
oldtime
Indicates the time is about to change.
newtime
Indicates the time has changed. The difference in time is determined from the timestamp on the last oldtime entry.
runlevel
Indicates a change in runlevel (useless in an accounting sense).
OPTIONS
Writetmp understands the following command line switches:
--help Outputs a verbose usage listing.
--version
Displays the version of writetmp.
-w wtmp
Select a different output file instead of the default (/var/log/wtmp).
-X[3] Write to a wtmp file maintained by versions 3.3 or 3.4 Tacacs terminal server access control software.
-X4 Write to a wtmp file maintained by version 4.0 of Tacacs terminal server access control software.
-u user
Specify the username for the username field.
-l line
Specify the tty name for the line field.
-h host
Specify the hostname.
-i id Specify the init id name. Not applicable to tacacs wtmp files.
-p pid Specify the pid number. Not appliccable to tacacs wtmp files.
-t type
Specify the type of wtmp entry for the ut_type field, not to be confused with entry-type. May be coded as a number or one of:
unknown, runlevel, boottime, newtime, oldtime, init, login, user or dead.
-c comment
Specify the comment for the tacacs 4 wtmp comment field (16 characters max).
EXAMPLES
Write a shutdown message to an alternate wtmp log:
writetmp -w /var/adm/xtmp shutdown
A shell script to update the time in an alternate wtmp file when netdate is run:
#!/bin/sh
writetmp -w /var/adm/xtmp oldtime
netdate clock.llnl.gov
writetmp -w /var/adm/xtmp newtime
Find out how often and for how long people run a specific program, such as pine:
#!/bin/sh
# /var/adm/cmdtmp must be globally writable.
cmdtmp=/var/adm/cmdtmp
writetmp -w $cmdtmp -u pine -l cmd$$ -h $USER -t user
/path/to/real-pine $*
writetmp -w $cmdtmp -l cmd$$ -t dead
FILES
/var/log/wtmp login database.
AUTHOR
Steve Baker (ice@mama.indstate.edu)
BUGS
Does not lock the wtmp file and does not guarantee a successful write. Could in theory corrupt a log file.
Rdate and netdate can take seconds to complete, so writing oldtime/newtime records around them may not be entirely accurate.
SEE ALSO date(1), last(1), sac(8), netdate(8L), reboot(8)UNIX ManualWRITETMP(8)