11-11-2002
Yes, absolutely. It is vital for a sys admin to understand the boot process.
Any command run by root has some potental for danger. Something like: "df -k > /etc/passwd" could be a real disaster. But vgdisplay and lifls should be as safe as, say, df. Both just try to dispaly some information. Neither wants to change anything. It's lifcp that is more dangerous. It is a file copy program.
I don't know about linux, so I can't compare it to HP-UX.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
how do i make a program run at system startup?
is there a hirarchy i have to consider?
is there any equivalent to an NT "Service" in unix?
how do you set it up?
thanx
Ron (2 Replies)
Discussion started by: exoron
2 Replies
2. UNIX for Dummies Questions & Answers
hi,
i just realise that everytimes i boot up my sun solaris 8 sparc, i need to explicitly run the following comand to start up my snmp agent.
cd /etc/rc2.d
./K07dmi start
./K07snmpdx start
i just wonder that how to make it auto-startup once the machine is boot up.
please enlighten me.... (1 Reply)
Discussion started by: champion
1 Replies
3. UNIX for Dummies Questions & Answers
Hello,
I am a redhat linux user and I want to try out freebsd 4.7.
My question is how does freebsd startup? I can not seem to find any run levels like in linux. All I see are rc.conf and rc scripts, I just want to know how does things get started. Also if I install Apache, where would i... (2 Replies)
Discussion started by: xNYx
2 Replies
4. UNIX for Dummies Questions & Answers
sorry, i'm a newbie to unix...
but how do i or rather where do i write scripts that auto start my application e.g. Informix?
in Windows it would be services but in UNIX where can i auto start my informix program? To run informix i just type "oninit". And do i have to login to any user before... (2 Replies)
Discussion started by: doofie
2 Replies
5. HP-UX
We are runing HPUX on a 7400 server.
Some of our users are sitting in records for hours at a time and locking essential records or tables (A discipline issue I know, and I'm working on it.... However).
Does anybody know of a way to automatically terminate processes that have been idle for a... (1 Reply)
Discussion started by: Yantoch
1 Replies
6. HP-UX
I have a machine running HP-UX 11.23 (PARISC) and APA startup fails on boot. This is found in /etc/rc.log:
Configure Auto-Port Aggregation(LAN Monitor) interfaces
Output from "/sbin/rc2.d/S343hplm start":
----------------------------
get_start_dlpi_version: failed, errno is 22
ERROR: ... (1 Reply)
Discussion started by: kknigga
1 Replies
7. Linux
I know how to add an apps to auto-start in GUI, but I'd like to know how to do it mannualy. So where is the file saved to by GUI ? (1 Reply)
Discussion started by: honglus
1 Replies
8. Shell Programming and Scripting
Hi there,
I'll start by letting you you know my current shell programming and scripting is very week (and thats a euphemistic description). I'm really just wanting someone to make a suggestion to get me rolling in the right direction though absolutely any help is of course welcome.
Set Up
-... (0 Replies)
Discussion started by: lukusc
0 Replies
9. Shell Programming and Scripting
Hi,
While trying to supress password prompt using ssh. I have added .ssh folder manually and generated public key and added to authorized_keys file in the remote machine. But still it's prompting for passwords with the following message:
Permission denied... (5 Replies)
Discussion started by: 116@434
5 Replies
10. AIX
Hi All,
I would like to schedule auto IPL (shutdown and start-up) by using a shell script.
Can you please give me some idea?
want to test on my lab box first.
shell script should bring AIX LPAR down and then need to start/activate the LPAR after 30 min
any idea is highly... (3 Replies)
Discussion started by: System Admin 77
3 Replies
vipw(8) System Manager's Manual vipw(8)
NAME
vipw - Edits the /etc/passwd file
SYNOPSIS
/usr/sbin/vipw
DESCRIPTION
You use the vipw command to edit the /etc/passwd file with the editor defined in the EDITOR environment variable. If the variable is not
set, the default editor is vi.
The vipw command performs basic consistency checks on the edited file. If a hashed indexed passwd existed previously, the vipw command
uses the mkpasswd command to create recreate it.
The command must not be used on systems that use extended security attributes since it cannot set or change them. You must be root to run
this command. Only root and security administrators should have execute access to this command.
Since the vipw command cannot effectively change all the attributes of users, it should not be used in a secure environment.
The vipw command accesses the following files, and requires the listed permissions:
------------------------------
Permissions File
------------------------------
rw /etc/passwd
rw /etc/passwd.pag
rw /etc/passwd.dir
rw /etc/ptmp
rw /etc/ptmp.pag
rw /etc/ptmp.dir
------------------------------
EXAMPLE
To edit the /etc/passwd file, type the following command and add the required line entry: vipw
FILES
Specifies the command path
RELATED INFORMATION
Commands: passwd(1), passwd(4), adduser(8), mkpasswd(8) delim off
vipw(8)