teapot posted:

code:

last -f /var/log/wtmp.1

Lexical Unit posted:

I just realized I have no idea how to find out what the gateway-IP is for a Linux system. That information doesn't appear to be in ifconfig and apropos gateway doesn't find anything of value. Searching google for "linux gateway" doesn't offer any clear help.

So like, how do you find out what the IP of your gateway is from a Linux box?

teapot posted:

code:

/sbin/ifconfig eth0|head -n 1|sed -e 's/^.*HWaddr //g' -e 's/ *$//'

DagothUrReturns posted:

Just a quick Ubuntu question here. I'm running Feisty, and I'd like to know if I'll be able to upgrade to Gutsy when it comes out without wiping my partition. Historically, has there ever been an alternative?

deimos posted:

did you grub-install?

admiraldennis posted:

Add a trailing slash.

code:

cp -Rp /mnt/old/ /mnt/new/

admiraldennis posted:

Ericcorp posted:

I don't mean prompts with in asterisk, but just command line prompts. For example:

apt-get install -y gcc

returns

Please insert the Ubuntu CD Version Flippity Flop 6.08
Press [enter] to continue...

Well, I don't have the Flippity Flop disk. But, it did infact download the package, but that's beside the point. It's waiting for me to push enter, but I don't have the disk. When I press enter, it just keeps asking over and over. I just need a way to quit the prompt and get back to a root shell or whatever the basic command prompt is.

teapot posted:

Yes, but then no one will be able to read reports sent to local root, what usually is the reason why MTA is installed in the first place.

teapot posted:

No sane admin will log in locally to every machine in the student lab just to read email -- at best he will make ssh/rsync/... push updates and configuration changes and never bother touching those boxes, and never manually log in to anything but a few of them choosen for testing/staging.

The Remote Viewer posted:

Is there an easy way to do a JBOD type setup in software? I know Linux natively puts all hard drives into one big filesystem, but not the way I want it. If I take an empty drive and partition it with a mountpoint of '/' will that make extra space available to whatever needs it? I want all my hard drives to be one big seamless blob of diskspace.

Olzi posted:

I've been looking into installing linux to an external usb drive, with XP already installed on the internal drive. When the external drive isn't connected I want to keep the linux installation completely stealth, without any bootmanagers. My BIOS recognizes the usb drive, so here's what I'm thinking:

1. Install the linux distribution on the external drive.
2. Install either LILO or GRUB on the MBR of the external drive.
3. Set my bios booting order as CDROM - USB DRIVE - INTERNAL DRIVE.

When the usb drive isn't connected, bios doesn't find a bootable OS from the first two choices, so it loads up XP. When it is connected, the bootmanager is loaded from the usb drive and I can choose between the two systems.

Does this make sense ?

do it posted:

For some reason, when I ssh into my server, I can't use backspace in apps like nano, pico, or even vim. Backspace does work at the command line though. Any ideas?

Harokey posted:

I have an Nvidia Card that is hooked up to a TV. Right now I have the TV hooked up as a second monitor with twinview. However, I would prefer it to just display any video on the monitor, and not be able to put anything else on it. (Right now I can drag windows over to the TV, which I don't really want to do.) To watch videos I use VLC that creates a second video in a window, which i just maximize on the TV monitor.

Is there any way to just have the video mirror onto my TV without having the TV set up as a second monitor that takes up desktop space? This is the way my Laptop works in Windows.

TheHeadSage posted:

Ok, I've got the most retarded UPS alive, and no money to replace it. So I've now got to create the most convoluted shutdown system.

Pretty much, I run a Linux server with VMware Server on it, and it can't talk to my UPS. But not through lack of trying. However, the Win2k3 guest OS can talk to it. So I've got the UPS software installed and it's all working.

I know how to issue commands to a remote server via ssh (Putty and it's ilk) however, for the sake of security, I don't want to use my root account.

So, I created a new account "remshut" and configured ssh so it can log in remotely using a key.

How do I setup sudo so that the user "remshut" can run the command shutdown -h now without it asking for a password? Putting "remshut ALL= NOPASSWD: /sbin/shutdown -h now" into /etc/sudoers does sweet gently caress and all.

Hughmoris posted:

Ok, I installed Ubuntu a few days ago and am trying to find my way around some basic terminal commands. I'm making some progress, but I'm stuck on something that is almost too embarrassing to ask... How in the hell do you handle spaces in folders and file names?

Ex. I have a music folder, with a Jack Johnson folder inside that, and several albums inside that. I've tried cd /music/Jack Johnson and it won't recognize the command. I've tried seemingly ever combination of odd characters to fill the space and can't figure it out.

What simple step am I missing?

Alowishus posted:

Is power failure on the drive or system common? No filesystem is going to react well to hard power-off. XFS and ext3 (by default) only journal metadata - changes to filesystem structure - not user data. If the power goes out in the middle of a file write, you will wind up with a corrupt file, even though its location on disk won't be in question.

How do you mean corrupted? Just that it had to go through a lengthy re-check upon boot? Or did you have actual data loss? If you're only talking about occasional power failures and your complaint with ext3 was that it took too long to do a full re-check for consistency, then yes XFS is an excellent alternative. It's no less likely to get corrupt, but it will fix itself up more quickly.

If you are expecting regular power failures, then actually your best choice *is* ext3, but with the optional full data journaling turned on. This will slow your write performance somewhat, but it will cause every bit of data that gets written to the disk to be journaled, and thus make it recoverable (or reversible) without risk of corrupt files or long re-check times. As far as I know, ext3 is the only filesystem for Linux that can do full data journaling.

That's generally the right way to do it. If you don't necessarily want it mounted all the time, you might want to consider putting it under the care of autofs, which will automount it when you need and then dismount it when it's not in use. This may also help alleviate some of the problems discussed above.

chryst posted:

Really, is this a mystery to you? The problem isn't your filesystem, the problem is that a speaker keeps falling on your computer.

Seriously, a falling speaker is going to jar the disk heads, and that's not good, ever. Your computer is locking up when it happens because it realizes that something got seriously hosed up. Maybe some piece of hardware was jarred loose. It locks itself to protect from writing anything in hosed-up-state. Anything that's in the middle of writing is going to get corrupted.

fsck isn't a magic fix-all tool. In fact, I've had it take a usable-but-inconsistent disk, and orphan every file to lost+found because it didn't know what the gently caress. It's meant to fix typical filesystem crap that happens in normal use. Corruption during a power failure (or speaker falling) can easily be more than fsck can handle.

Harokey posted:

So should I wait to upgrade to Fedora 9 since I use an nvidia card with dual monitors using twinview?

Obsolete posted:

I've converted my old desktop PC into an Ubuntu file server that I've thrown in my closet, and I was wondering if there was an easier/better way to administer the files.

Right now, I've got a 20gb home partition, and then two 400gb drives that I'm using to store media on. Every time I want to copy or moves files to or from these drives, I need to use sudo, because I'm not the owner (root is) of the drive. I've since chown'd both drives to be me, and used chmod to make all files 777. However, every time a new file gets added to the drive(s), it makes the owner root. I don't want to have to sudo every single time I want to copy/move/delete something, and I don't exactly feel especially comfortable with having everything chmodded to 777. Is there an easier way to maintain this system?

Obsolete posted:

Even when I download files with wget (without using sudo) when I'm logged in via SSH, the file defaults to being owned by root. I've gotten pretty used to the situation by now, as bizarre as it is, and I nearly always use a sudo command, but that just doesn't sound like that's the way it should be working. If it matters, my home partition, and the two mounted 400gb drives are all formatted as ext3, so there's no weird NTFS gibberish going on.

I've never used sudo with a dash before. I don't think I've ever even seen that before? I don't use "su," I always use "sudo." Any ideas? Thanks!

Obsolete posted:

I do both. Files download (via rTorrent or some such) to one of the drives, then I copy those to the other drive into specific folders. However, even when using the machine standalone, and logged in as me, and downloading to my home directory, or copying something from my home directory to someplace else, I always have to either use sudo or chown the file to move the file to a drive outside my home directory, despite the drives all being chown'd, chgrp'd, and chmod'd to me.