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0
votes
1answer
296 views

LPIC-1 for non-professional experienced user

I am interested in trying out the LPIC-1 certification however I am slightly worried that I may not have the needed professional experience to pass. I am still studying hard and running a lab with a ...
0
votes
3answers
585 views

How to limit administrative privileges to various config files?

I want one administrator to be able to edit the /etc/fstab file but one administrator to not be able to edit the fstab file. Both administrators need access to all other administrative tasks. Is ...
2
votes
3answers
441 views

How can I see which package manager is running?

I'm on Debian 6.0.5 (squeeze) and every now and then I see the following icon in the notifications area of the GNOME2 pannel: but black instead of red. It reads A package manager is working. Usually ...
4
votes
2answers
3k views

SELinux: Can I disable copying of certain files?

Please excuse me if this is too basic and you're tempted to throw an RTFM at me. I want to prevent users from copying certain files while granting them read access to the same files. I thought this ...
1
vote
1answer
2k views

Rehashing /etc/shadow. Can I force NIS users to change password?

I'm currently migrating a CentOS environment to a Debian one. The users log in over the network using NIS. I was hoping to copy /etc/shadow from my old server to my new one so that we can offer ...
3
votes
4answers
2k views

Hardware and software inventorying

Objective Collect hardware and software information from lab computers, respecting students' privacy. Type of information to collect Examples: System memory Bash verion JVM version Operating ...
2
votes
2answers
50 views

Reassign users to a single group

Right now one of our server is setup such that all users are in their own group. Is it possible to reassign them to a single group and then allow each user READ only access to other user's directories?...
3
votes
1answer
1k views

How can I set a directory maximum size?

Is there an easy way to cap the size of a directory? I don't think there is but just wanted to make sure. I would like to set max directory sizes for some user home dirs as well as some other dirs, ...
8
votes
4answers
12k views

How can I assign an initial/default password to a user in Linux?

I found a guide that explains how to set a user's password. I'm trying to automate it and send an e-mail to the user like: userid created with password XYZ. request to change the initial password. ...
0
votes
1answer
1k views

How do I force a user to log out? [duplicate]

Possible Duplicate: How do you kick a benign user off your system? I'm trying to remove a user account with the userdel -r command. However, it says that it is unable to remove the user ...
3
votes
2answers
2k views

How do I check active crons?

I'm trying to hunt down a cron job (or the equivalent) which I know is running, but I can't find it in the default cron files for my system (FreeBSD / Linux / BSD). How can I tell which ones are ...
4
votes
1answer
750 views

Package managers for local installations under home directory [duplicate]

Possible Duplicate: Non-Root Package Managers I work extensively on a remote system where I do not have admin rights. However, I am allowed to install my own binaries and programs under my ...
6
votes
5answers
563 views

Which tasks to learn and which books to read to become more skilled at Unix/Linux internals? [closed]

I recently interviewed at a major company and did well on programming questions such as: "What is the time complexity of quicksort? What is the opposite in C of malloc? What is the opposite in C+...
6
votes
5answers
519 views

What are the recommended ways of defending a remote *nix install from a hamfisted admin?

Once in a while (often a long while), I have a difficulty where I execute a command that completely screws up a Linux machine. Most recently, I accidentally mounted-again the root partition (thinking ...
0
votes
1answer
3k views

The TIME field in ps -ef

When I do ps -ef, I see "TIME" field. What does this field mean? From what I understand, this tells the actual CPU time, that the process got (amidst all the context switching). Does the TIME field ...
3
votes
2answers
5k views

mounting to non-empty directory, then later deleting original files

I have some unused space on my disk, and decided to use a little of it to create a separate /var partition. There might be an easier way to do this, but my idea is to copy the existing /var ...
6
votes
3answers
1k views

How to tell when a computer is idle?

I have a computer that is only used some of the time, and I was was wondering if there was a way to have it turn itself off after a period of inactivity. Here's the tricky part, if I was just ...
0
votes
1answer
1k views

Need help with understanding output of ps -ef on linux

When I do ps -ef on my Linux box, I get: UID PID PPID C STIME TTY TIME CMD Please help me with meaning of C,TIME. is the TIME , the actual cpu time allocated to the process?
8
votes
2answers
15k views

How to expire a password? (For inital account creation)

I've often created temporary passwords for users for my own development machine for initial id creation. For other environments, I've seen admins have the ability to have a password show as expired ...
0
votes
2answers
1k views

Automated SSH Login [duplicate]

Possible Duplicate: Shell Script for logging into a ssh server Autentification on SSH connection in OneLine How could I make a SSH Login programmatically on a unix server, I don't have ...
4
votes
2answers
191 views

Simple Templating for Config Files

I need to manage a growing set of similar-but-different ASCII files. ( It so happens that they're Apache VirtualHosts, but that's not particularly relevant. ) For each production website, the ...
3
votes
1answer
2k views

How do I add a local user to a box that uses LDAP authenticaiton?

I'm working with a box that uses LDAP for user authentication. However, I need to add a local user to run some services and I don't want non-person users junking up the LDAP directory. Does anyone ...
6
votes
5answers
3k views

Why is it recommended to create a group and user for some applications?

Most of the time, when installing a program from source it is recommended to create a new user and a new group and give /usr/local/<myapp> the recently created user and group ownership. Why is ...
1
vote
2answers
321 views

Browser-based front-end to linux

I'd like to ask if anything like this exists. A browser-based tool for looking at a Linux system, managing it, and helping newbies diagnose problems. What I'm thinking of is something like this : ...
1
vote
3answers
224 views

How to clean up my desktop?

Now, I see that my desktop running rhel 5.6 has run out of space. Now I need to clean it up. There must be some unintentional files adding up. What I would like to be able to do is list the files in ...
5
votes
1answer
1k views

What is the routing behaviour when two or more default routes?

I have two ISP at the time, connected to the same machine. I added both of them in the routing table as default. However, only one connection is used. $ route Kernel IP routing table Destination ...
8
votes
4answers
452 views

What are your best practices and future plans for deploying unixoid desktops?

I have been setting up Linux desktops for a non-profit radio observatory. For me, this was the first time I had to think about "deploying" several identical machines, centralizing login, home ...
0
votes
1answer
2k views

Fun, tricky and hard questions for Unix/Linux Admin interview [closed]

I am now preparing process of recrutation for group of Unix/Linux Administrators and I was wondering if maybe you have idea for fun or tricky or hard questions to ask the candidates in order to test ...
0
votes
1answer
509 views

Smitty like solution under Linux or BSD?

Are there any solutions similar to AIX smit for Linux based OSes? Basically this would be some kind of 'terminal menu-driver' script collection perhaps using ncurses for doing things that system ...
1
vote
1answer
206 views

Mass update of /etc/ldap.secret

I have a group of servers authenticating against an LDAP server. I would like to be able to periodically update the /etc/ldap.secret file with an updated secret. I've written a small script that reads ...
11
votes
3answers
5k views

What is the point of the 'operator' user?

Many un*x systems ship with a user account named 'operator'. What is the purpose of this account? Do some systems actually make use of this account, or is this more of a historical legacy? Have you ...
1
vote
1answer
68 views

Equivalent of newusers for groups

The newusers command is useful for adding or modifying users in bulk. Is there an equivalent command for managing groups?
3
votes
4answers
261 views

How do you work with old servers?

I've recently fallen into doing more work on LAMP servers, which is pretty new to me. At first it wasn't a problem migrating my preference files, but as I've grown and learned more, my preferences ...
11
votes
1answer
7k views

How can I configure cgroups to fairly share resources between users?

There used to be a kernel config option called sched_user or similar under cgroups. This allowed (to my knowledge) all users to fairly share system resources. In 2.6.35 it is not available. Is there a ...
1
vote
0answers
113 views

Problem with NIS [duplicate]

Possible Duplicate: NIS and autofs error I have one server and one client machine. In Server, I have configured NIS, and /home/guest/nis1 is shared through NFS. Both NFS and NIS are ...