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1500 questions
297
votes
3 answers
How do I run specific sudo commands without a password?
On one particular machine I often need to run sudo commands every now and then. I am fine with entering password on sudo in most of the cases. However there are three sudo commands I want to run without entering password : sudo reboot sudo shutdown…
BhaveshDiwan
- 11,516
297
votes
47 answers
How to fix "The system is running in low-graphics mode" error?
Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong drivers, incorrect or invalid lightdm greeters, low disk space,…
jokerdino
- 41,762
296
votes
7 answers
How do I install .run files?
My PC has both Ubuntu and Windows 7 installed. I have installed all my drivers in Windows like Nvidia graphics, motherboard etc. Shall I install them in Ubuntu too? I looked on the web for my Nvidia drivers and I have found a .run file. How could I…
kostas
296
votes
10 answers
How can you completely remove a package?
I am trying to do a clean install of the octave3.2 package. To do this, I removed it, then tried to reinstall it. When I reinstalled, an error occurred. It could be a bug in the package, but I want to make sure I have everything removed so that I…
user1012451
- 3,265
296
votes
6 answers
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
I'm trying to run this command in the terminal: sudo apt install software-properties-common This is the error message I get: E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the…
GoodNite
- 2,961
- 2
- 9
- 3
295
votes
22 answers
How can I create launchers on my desktop?
In older versions it was easy to create a launcher on my desktop. All I had to do is right click on my desktop and select the "create launcher" option. How can I create such launchers now?
tinuz
- 3,972
294
votes
16 answers
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?
Rasmus Mathiesen
- 3,290
292
votes
10 answers
How to list all symbolic links in a directory
I have a symbolic link in my /var/www/ directory that links to WordPress. When I run the command ls -la from the /var/www/ directory the link to WordPress doesn't show up. Is there a way to list all of the symbolic links that are in a directory?
Isaac
- 3,115
292
votes
6 answers
How do I provide a username and password to wget?
I've tried to connect to a server via wget: wget http://<user>:<pass>@serveradress But wget responds: invalid port I know that the server accepts incoming traffic at port 80. How can I fix this issue?
pschmidt
- 3,889
292
votes
7 answers
How to run sudo command with no password?
How does the ubuntu user on the AWS images for Ubuntu Server 12.04 have passwordless sudo for all commands when there is no configuration for it in /etc/sudoers ? I'm using Ubuntu server 12.04 on Amazon. I want to add a new user that has the same…
aychedee
- 8,347
289
votes
16 answers
How can I install Windows after I've installed Ubuntu?
I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break GRUB . Editor's note: Current readers should keep in mind that this is an older question, and…
Sk8er
- 3,979
289
votes
3 answers
Error sudo: add-apt-repository: command not found
I’m running Ubuntu 14.04. When I run: sudo add-apt-repository ppa:ubuntu-wine/ppa I get the following error: sudo: add-apt-repository: command not found I tried to run sudo apt-get install software-properties-common but it shows:…
Nhóc Emi
- 2,891
289
votes
12 answers
Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Upon trying to upgrade from 10.10 to 11.04 all seemed to go well until the restart. This error message is what comes up: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) How do we fix that?
Jeffrywith1e
- 3,145
288
votes
9 answers
How to get the MD5 hash of a string directly in the terminal?
How do I get the MD5 hash of a string directly from the terminal? For example, I want the string abcdefg hashed. Currently the md5sum command only accepts a filename as input. I want to simply enter the following line and everything be done with.…
2hamed
- 3,493
288
votes
28 answers
How can I highlight or annotate PDFs?
Currently I need to highlight certain sections in PDFs, or add annotations (comments/notes). These modifications would need to be saved. What tools are out there to do this on Ubuntu?
ssanj
- 4,411