Questions tagged [administration]

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27 questions with no upvoted or accepted answers
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2
votes
3answers
106 views

Are there any practical reasons for setting a maxlogins limit for users in limits.conf? What are the benefits?

Why should I set a maxlogins limit in /etc/security/limits.conf? In other words, are there any performance-related and security-related benefits to be gained? I have only three users on my machine, ...
2
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0answers
159 views

StickyBits NFSv4 ACL to stop user movement of folders

Backstory: Client has a mixed environment of POSIX and NFSv4. The POSIX blows away the underlying NFSv4 ACL every-time they touch it or do anything with it. They say that users are able to take a ...
2
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1answer
2k views

Managing cron jobs across multiple servers

We are facing a problem with managing cron jobs over multiple servers with dependencies. I hope there is an opensource central management project that I can be used to handle that and report the ...
2
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0answers
169 views

What is the command erepc? Is this malware?

I noticed that my system was running slower than normal so I ran a top command. Hogging a ton of my CPU was a process called erepc that I can find no information on. PID USER PR NI VIRT ...
2
votes
1answer
176 views

How to specify a daemon shutdown command with upstart?

In an upstart configuration how do I define what command should be used to shutdown a server. Lets say I have daemon that has two seperate processes. startup.sh - to start the server shutdown.sh - ...
1
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0answers
29 views

How do you cleanup after deleting an LDAP user on RHEL 7?

We have a small network using 389 Directory Server for LDAP. We make LDAP users, those users log on to various machines in the network, and then sometimes we delete those users. However, after ...
1
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0answers
1k views

User denied permission to read his own home directory

Note: Username modified for public post. I have a linux server on which I have root privileges. There is a user account "privuser" which can only be SSHed into using SSH keys. But, due to some user ...
1
vote
1answer
56 views

How did my Hosts file change?

Let me start this by saying I do not or never have had Admin access to my Mac. Issue: Recently when I tried to navigate to the URL dev.local.com which was mapped to a specific IP address in my Hosts ...
1
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0answers
85 views

system admin problem simulator (like GNS3 for networking)

some month ago I read an article with advices for linux system administrators candidate and it referred to some kind of virtual machine with common problems for system admin to solve. The point is ...
1
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0answers
305 views

Tasksel vs metapackages

Some debian applications are installed via tasksel, rather than the traditional apt tool. What is the benefits/differences between the methods, when we already have the option of meta-packages?
1
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2answers
1k views

Script to see if user has logged off

I have created this program to see if a user is logged on and it checks every minute. if [ "$#" -ne 1 ] then echo "Usage: mon user" exit 1 fi user="$1" until who | grep "^$user " > /dev/...
0
votes
0answers
23 views

Getting a rolling release just right and then freezing it: a good idea?

I really like how rolling releases offer the latest versions of everything, because sometimes that is important. However, once I have things working well, I am not that anxious to keep updating to the ...
0
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0answers
30 views

What is admin://<filepath>?

recently I've used the next command xed admin://<filepath> and not sudo xed <filepath>. I've tried to find some infos about the first command but I've do not found anything. I presume ...
0
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1answer
30 views

How to find if partition is soft partition or not - Solaris 10

How to find if partition is soft partition or not in solaris 10?
0
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1answer
189 views

useradd with no options

When I create a user with useradd (no option) I can later add his passwd by using passwd new_user. How can I create his correct home directory (with Desktop and Templates inside) and all other ...
0
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1answer
46 views

postfix configuration

I started to use postfix, and configured the /etc/postfix/main.cf file. After that I runed postfix with postfix start command, but got an error parameter mail_owner: unknown user name value. Please ...
0
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0answers
28 views

Commands queueing across different users

I want to be able to queue commands across different users on one machine so calculation resources would be used in order and not simultaniously is there an util for that? I found tsp but I think it ...
0
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1answer
108 views

hp-ux admin tool lsof fuser for B.11.31

centrpt:oracle> uname -r B.11.31 We need lsof and fuser as there are unclosed file handler so we cannot reclaim disk space after reboot. Where we can get the tool for this dated version of HP-UX ??...
0
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1answer
47 views

How to prevent temporary files from being removed?

I have Ubuntu 14.4 on my machine, and also have downloaded Android-SDK on it. When I install some package in Android-SDK, it does three things: it downloads the package into a temp folder, when ...
0
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1answer
75 views

Centos 7 --> Track if users attempt to access a folder/directory they do not have access too?

If Bob tries to access something like /home/Code/TopSecret for example. The system wouldn't allow him to access this without having the permission. I would like to know about these attempts. Is ...
0
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1answer
378 views

how to find the logged in user in linux running oracle session

i like to find out the logged in user to linux and running some session . we cannot use the os_user option as we all use sudo user before login to oracle. so how to find out the super user who logged ...
0
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1answer
75 views

How to avoid receiving warning message from a mount system

I asked similar question in superuser, no satisfying answer. Re-post here with some update. I mount a remote host to my system during debug because the source code is on that host, but after I do the ...
0
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2answers
139 views

Redhat subscriptions - synchronise subscriptions

I have inherited a system admin role of a small cluster of redhat machines - most running rhel5 and one machine running rhel6. My sys admin skills are at the moment poor but I would like to improve ...
0
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1answer
312 views

How can I tell if lack of memory is causing these crashes?

I have a tornado web server running a flask application that connects to a postgres 9.3 database on an ubuntu 12.04 box. The application has been crashing intermittently and I am trying to understand ...
0
votes
1answer
1k views

telinit 1 and run a command there

I need to do some maintenance on a bunch of Debian (Wheezy) systems, and it has to happen at run level 1. But not all machines have a keyboard and a screen; some are even located somewhere else. So I ...
0
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2answers
1k views

Can't Change CUPS password

I am running CrunchBang based on Debian 6. I can't do anything printer related. It is saying I am unauthenticated. I have tried: family@familydesktop:~$ sudo lppasswd -a family Enter password: Enter ...
-1
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2answers
150 views

Change MAC address immediately after system activation

I have few computers each with same ethernet MAC address. I want to change ethernet MAC address on each computer as soon as network card is detected so I do not have any conflicts in the network. My ...