Most Popular
1500 questions
393
votes
7 answers
How to disable strict host key checking in ssh?
I would like to disable strict host key checking in ssh for Ubuntu 11.04. How to do it?

karthick87
- 81,947
392
votes
8 answers
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?

Olivier Lalonde
- 58,691
392
votes
4 answers
How to set JAVA_HOME for Java?
I've installed a version of Java. How can we set the $JAVA_HOME environment variable correctly?

Gaurav Agarwal
- 11,623
390
votes
8 answers
How to list dependent packages (reverse dependencies)?
In order to research what caused the installation of a given package, I'd like to get a list of packages which depend on that package. I couldn't find anything obvious in man dpkg.

l0b0
- 8,819
386
votes
14 answers
How do I change the computer name?
When I connect to my server (ubuntu server 10.10), I get this:
name@server-name.belkin ~>
How can I remove ".belkin"?

Wolfy
- 7,920
385
votes
25 answers
How to get the GPU info?
I'm looking for a command that would give me the same info as:
cat /proc/cpuinfo
Except for the GPU (type of the chip and memory, frequency).

user2413
- 14,337
385
votes
9 answers
How to see time stamps in bash history?
Is there any way I can see at what time the commands were executed from the bash history? We can see the order but is there any way I can get the time also?
Bottom-Line: Execution time in the Bash history

Raja G
- 102,391
- 106
- 255
- 328
385
votes
23 answers
Unable to mount Windows (NTFS) filesystem due to hibernation
Whenever I boot Ubuntu, I get a message that it cannot mount my windows partition, and I can choose to either wait, skip or manually mount.
When I try to enter my Windows partition through Nautilus I get a message saying that this partition is…

yotamoo
- 4,229
384
votes
7 answers
How can I check the available version of a package in the repositories?
How can I check the version of the available package in the Ubuntu repositories without installing it?

Raja G
- 102,391
- 106
- 255
- 328
383
votes
10 answers
How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
The computer gave me this output in a window:
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_natty_main_binary-i386_Packages
E: The package lists or status file could not…
user12250
381
votes
16 answers
How can I get a list of all repositories and PPAs from the command line into an install script?
I know how to list all packages installed on my system.
But how could I get a list of all repositories and PPA's into a script that I can run on a new machine to replicate the repository setup including the keys?
I know I can look into…

stwissel
- 6,211
- 5
- 23
- 24
380
votes
7 answers
fsck error on boot: /dev/sda6: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY
I dual boot Ubuntu and Windows 7.
I was browsing on FireFox in Ubuntu and all of a sudden I get some error message, so I rebooted.
Now when I try to boot into Ubuntu I get this message:
fsck from util-linux 2.26.2
/dev/sda6 contains a file system…

Jordy
- 3,901
- 3
- 13
- 4
377
votes
3 answers
How do I remove an alias?
I want to remove gs alias from my PC. When I type gs it will open GhostScript. But I checked everywhere in the home directory .alias .bash_aliases .bashrc
I also overwrite the gs with my custom alias.
I can't remove it. And I also type alias in…

jean000
- 3,879
- 2
- 13
- 3
376
votes
10 answers
Run a shell script as another user that has no password
I would like to run a script from the main ubuntu shell as a different user that has no password.
I have full sudo privileges, so I tried this:
sudo su -c "Your command right here" -s /bin/sh otheruser
Then I have to enter my password, but I am not…

rubo77
- 32,486
376
votes
16 answers
Unable to correct problems, you have held broken packages
After upgrading from 10.04 to 12.04 I am trying to install different packages.
For instance ia32-libs and skype (4.0).
When trying to install these, I am getting the 'Unable to correct problems, you have held broken packages' error message.
Output…

trond
- 3,785