96
votes
10answers
34k views

Moving from bash to zsh

I'm considering moving from bash to zsh as I often come across posts praising zsh. I'm an experienced command line user and I'm assuming the basics are pretty much the same, so I'm looking for advice ...
95
votes
6answers
75k views

How can I configure Unity's launcher auto-hide behavior?

This has been an issue for me with Unity since its release. I'd like to make the the launcher auto-hide. Especially on Netbooks, where screens are small, the launcher is quite wide, making it ...
95
votes
9answers
4k views

What's the difference between package managers?

I know Ubuntu/Kubuntu has several programs that can be used to install packages, such as apt-get, aptitude, and synaptic (and perhaps others). What are the differences between them, and which one is ...
94
votes
7answers
93k views

How to install software or upgrade from old unsupported release?

Recently I have installed an older version of Ubuntu on my old machine. When ever I am trying to install any software it is giving error sudo -i apt-get install vlc The error being flagged is under ...
94
votes
5answers
83k views

How can I accept the Microsoft EULA agreement for ttf-mscorefonts-installer?

After a recent update, ttf-mscorefonts-installer prompted me to accept its license agreement. For some reason my terminal will not allow me to accept, or for some reason I am pressing the wrong ...
94
votes
4answers
203k views

How do I restart /shutdown from a terminal?

How to shutdown the Ubuntu installed system and restart it by using terminal ?
94
votes
3answers
65k views

How do I enable or disable Apport?

The system crash dialog is annoying me, how can I turn it off? I'd also like to know how to turn it back on just in case I need it to report a problem.
94
votes
9answers
122k views

How can I repair grub? (How to get Ubuntu back after installing Windows?)

I installed Windows 7, which ate Ubuntu's boot file. When starting up the computer, it now goes straight to Windows, without giving me the option of booting Ubuntu. How can I get Ubuntu back?
94
votes
10answers
53k views

What can replace system monitoring in the top Gnome Panel in Unity?

I'm used to have System monitoring in the top Gnome Panel: CPU, Temperature, Net, Fan-Speed. (see screenshot below) In Unity, the Top Panel is locked for window name and global menu, so I can't add ...
93
votes
11answers
71k views

How do I free up more space in /boot?

My /boot partition is nearly full and I get a warning every time I reboot my system. I already deleted old kernel packages (linux-headers...), actually I did that to install a newer kernel version ...
92
votes
2answers
55k views

How to add “Open terminal here” to Nautilus' context menu?

I am working on Ubuntu 12.04 64bit. I want to add "Open terminal here" to Nautilus context or right-click menu but it tries to download 32bit version from Internet.
92
votes
4answers
61k views

Why is “No new release found” when upgrading from a LTS to the next?

I'm following the upgrade instructions on Ubuntu's website, but on launching the upgrade tool I get this response: Checking for a new ubuntu release No new release found Am I doing something wrong? ...
91
votes
10answers
83k views

How do I install Ubuntu to a USB key? (without using Startup Disk Creator)

If you are hurrying to reply, System → Administration → StartUp Disk Creator -- no, that's not what I'm talking about. I want to try Ubuntu 11.04's Unity without touching my existing Ubuntu ...
90
votes
4answers
32k views

What is different about the Mac ISO image?

http://cdimage.ubuntu.com/releases/11.04/release/ At that location there is an ISO image which is described as "This image is adjusted to work properly on Mac systems." What specific problems on the ...
90
votes
3answers
52k views

How do I revert Alt-tab behavior to switch between windows on the current workspace?

Enabling Bias alt-tab sorting to prefer windows on the current viewport as described here made no difference. How can I get back the exact same behavior as 11.04, so that alt-tab only switches between ...
89
votes
9answers
39k views

There's an issue with an Alpha/Beta Release of Ubuntu, what should I do?

I've been running Alpha releases of Ubuntu for some time now. I keep running into issues - how can I get these resolved? What should I do when I encounter these problems? And where can I find other ...
89
votes
8answers
84k views

How can I get apt to use a mirror close to me, or choose a faster mirror?

Downloading from the main Ubuntu archive is slow even when it's not release day, how can I get apt-get to automatically use a mirror that is close to me?
88
votes
5answers
22k views

How to understand the Ubuntu file system layout?

In Windows there’re perhaps only a couple of important folders (by important I mean important in my logical picture of the Windows file system) in the installation drive (in my case C:\). Namely ...
88
votes
8answers
213k views

What does “sudo apt-get update” do?

I am wondering what sudo apt-get update does? What does it update?
88
votes
4answers
64k views

How do I set focus follows mouse?

Is there a way to set up "focus follows mouse" behavior in Unity?
88
votes
5answers
20k views

Why is Wayland better?

As recently announced by Mark Shuttleworth, Ubuntu will be moving towards using Wayland as its display manager. What are biggest differences between X11 and Wayland? Why will Wayland make Ubuntu ...
87
votes
14answers
176k views

How to send mail from the command line?

How to send mail from the command line?
87
votes
4answers
69k views

Is there a power saving application similar to Jupiter?

I have installed the 13.04 final release and so far I am loving it more 12.10. I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there ...
87
votes
2answers
149k views

How to extract files to another directory using 'tar' command?

I think tar archive.tar /users/mylocation will work. But it doesn't. How can I do that?
87
votes
3answers
22k views

How can I break out of ssh when it locks?

I frequently ssh into my box at home from school, but usually when I change classes and my computer suspends, the pipe will be broken. However, ssh simply locks up - Ctrl+c, Ctrl+z and Ctrl+d have no ...
86
votes
3answers
168k views

What does “cp: omitting directory” mean?

I've issued the following command: sudo cp ~/Transfers/ZendFramework-1.11.4-minimal/library/Zend/* ~/public_html/cmsk.dev/library/ When I do this, I start getting the following messages: cp: ...
86
votes
1answer
73k views

What are the meta, super, and hyper keys?

In System -> Preferences -> Keyboard -> Layout -> Options ->Alt/Win key behavior What do meta, super, hyper mean?
85
votes
11answers
107k views

How do I install Java?

How do I install Java and also in my browser so websites with Java work?
85
votes
19answers
60k views

How can I deactivate Bluetooth on system startup?

How can I deactivate Bluetooth on system startup?
85
votes
7answers
225k views

How can I restart x-server from the command line?

How can I restart x-server from the command line? I'd really like to be able to restart my gui without having to do a full system reboot.
85
votes
6answers
14k views

Best way to cache apt downloads on a LAN?

I have multiple Ubuntu machines at home and a pretty slow internet connection, and sometimes multiple machines need to be updated at once (especially during new Ubuntu releases.) Is there a way where ...
84
votes
0answers
96k views

How do I remove a PPA added via command-line? [duplicate]

I added a PPA for updating my kernel for ubuntu-12.04. Later, I found that the kernel doesnot exist on the link within PPA. I used this command. sudo add-apt-repository ppa:kernel-ppa/ppa Now if I ...
83
votes
6answers
44k views

What is the easiest way to resolve apt-get BADSIG GPG errors?

I frequently cross this issue, and always have to google for an answer. Does anyone have a permanent fix for BADSIG errors from apt-get? W: GPG error: http://download.virtualbox.org lucid ...
83
votes
16answers
174k views

How do I set Windows to boot as the default in the boot loader?

How do I set the bootloader so that in my dualboot with Windows 7/Ubuntu 11.04, Windows start up as standard instead of Ubuntu?
83
votes
5answers
101k views

How do I install LibreOffice 4?

I want to download and install LibreOffice 4. How can I do this?
83
votes
4answers
53k views

What is “dist-upgrade” and why does it upgrade more than “upgrade”?

I was wondering why upgrade sometimes doesn't want to upgrade certain parts of the system, while dist-upgrade does. Here's an example after running update: apt-get upgrade: ...
83
votes
6answers
53k views

How can I install just security updates from the command line?

sudo apt-get upgrade installs all updates, not just security updates. I know that I can use Update Manager to select only important security updates, but is there a way to do this from the command ...
82
votes
12answers
70k views

How do I disable the guest session?

How do I disable the guest session in Ubuntu 11.10 or higher? I don't want people to be able to use my computer without using a password to log in!
82
votes
5answers
225k views

How to install updates via command line?

Good day, When I log into my web server via SSH I see the information: 88 packages can be updated. 80 updates are security updates I tried apt-get update then apt-get upgrade but each time I log ...
82
votes
4answers
42k views

What software can I use to view epub documents?

What software can I use to view .epub documents?
81
votes
9answers
38k views

How do I disable overlay scrollbars?

It looks like Ubuntu 11.04 will come with overlay scrollbars by default. I do like them, but I don't like the current mix of scrollbar types as many applications don't yet use those overlay ...
81
votes
9answers
44k views

How to prevent updating of a specific package?

Because of bug #693758 I'd like to prevent apt-get upgrade and Update Manager from updating the "libgtk2.0-0" package. How can this be achieved?
81
votes
5answers
77k views

How is the /tmp directory cleaned up?

How is the /tmp directory cleaned up? Is it automatic? If so, how frequently is it cleaned up?
81
votes
10answers
59k views

How can I tell Ubuntu to do nothing when I close my laptop lid?

I would like closing the laptop lid to be a no-op. How can I do that?
81
votes
5answers
16k views

Why is Ubuntu switching to Unity?

I understand from Jono Bacon's blog that Ubuntu will be switching to Unity as the default desktop in the upcoming 11.04. What's not clear is "Why?". Could someone explain the benefits of Unity over ...
80
votes
12answers
217k views

How to install Eclipse?

I want to install the latest version of Eclipse but the Ubuntu Software Centre contains an older version. Is there a PPA or some other way to install latest Eclipse? Please describe the steps for ...
80
votes
8answers
51k views

Am I using Unity or Unity 2D?

Unity and Unity 2D look very much alike, so how can new users easily find out whether they are running Unity or Unity 2D?
80
votes
14answers
271k views

How do I add a DNS server via resolv.conf?

Is /etc/resolv.conf useless in Ubuntu 12.04 LTS (Precise Pangolin)? I see that the DNS server information is stored in NetworkManager now. The nmcli command line tool can list that for you. If I ...
80
votes
9answers
60k views

How to merge several PDF files?

There are a lot of software in Windows to merge PDF files but how can we do the same in Ubuntu?
80
votes
11answers
176k views

How do I install Oracle JDK 6? [duplicate]

Most of the software is not thoroughly tested with Java 7 and I would like to install Oracle's JDK 6.0 on Ubuntu 11.10. Could someone please provide me the instructions for the same?

15 30 50 per page