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1500 questions
103
votes
1 answer
How do "apt-get clean" and "apt-get clean all" differ?
What, if anything, is the difference between this command:
sudo apt-get clean
And this command:
sudo apt-get clean all
On my Lubuntu 12.04 system, simulating these commands reveals their behavior to be exactly the same:
ek@Apok:~$ apt-get -s…

Eliah Kagan
- 117,780
103
votes
13 answers
Download a file over an active SSH session
I want to download a file from an active SSH session. In many cases I probably could just use SFTP, scp, rsync et al but there are times where I have elevated permissions on the remote server in a way I cannot use these methods.
If you're struggling…

Oli
- 293,335
103
votes
4 answers
System program problem detected?
I keep getting, since several days, "System program problem detected" error message:
I always clicked on Report problem button but nothing happens.
I also run update and upgrade everyday.
What causes this ? How to get rid of it ?

Billal Begueradj
- 6,011
- 11
- 39
- 56
103
votes
7 answers
How can I free space from a massive 39.5GB /var/log/ folder?
I just got a message from the default disk analyses software (Baobab)
that I only have 1GB left on the hard drive. After some search, I found that the /var/log/ folder is the cause of this.
Some file/sizes in /var/log/:
kern.log = 12.6…

blade19899
- 26,704
102
votes
2 answers
What are some of the issues with CCSM and why would I want to avoid it?
I've seen some people complaining about how unstable CompizConfig Settings Manager ("CCSM") is and how it can break people's desktops if they're not careful.
What are some of the known problems with CCSM? I'd like to decide whether or not it's worth…

Jorge Castro
- 71,754
102
votes
14 answers
How can I install CUDA on Ubuntu 16.04?
For TensorFlow I would like to install CUDA. How do I do that on Ubuntu 16.04?

Martin Thoma
- 19,277
102
votes
0 answers
How to install skype in ubuntu 16.04
How to install skype in ubuntu 16.04?
Please provide step by step process for installation.

star_in
- 1,061
102
votes
5 answers
Why do I get "Required key not available" when install 3rd party kernel modules or after a kernel upgrade?
This issue happens only on UEFI systems with enabled Secure Boot.
When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not available when I try to modprobe them.
VirtualBox…

Pilot6
- 90,100
- 91
- 213
- 324
102
votes
7 answers
How can I view a progress bar when running rsync?
I am using Ubuntu 12.04 as a repo and would like to view a progress bar when using rsync from the command line. I tried the option suggested in this article (-P), but I prefer to see a progress bar and not use Grsync. I am using rsync -P source…

Joseph Smith
- 1,143
102
votes
4 answers
Terminal autocomplete doesn't work properly
If I start typing a command like apt-g after hitting tab, the shell completes the command to apt-get, but for the second part of the command like install, if I enter some characters like insta, hitting tab, doesn't complete it to install.
Another…

Ravexina
- 55,668
- 25
- 164
- 183
102
votes
3 answers
"This account is currently not available" error when trying to ssh
An error occurs when I try to make SSH connection:
$ ssh -p 22 www-data@x.x.x.x
This account is currently not available

Mert Özoğul
- 1,155
- 2
- 8
- 12
102
votes
3 answers
How can I check disk space used in a partition using the terminal in Ubuntu 12.04 LTS?
I am using Ubuntu 12.04 LTS and I was wondering if there is a command that can tell the space used in a partition using the terminal. Like I want to use the su command to change to a user called admin (it is named admin). So I typed :
su…

Jatttt
- 2,327
- 12
- 32
- 43
102
votes
5 answers
How to make selected tab in terminal more prominent
Something about the color scheme changed in 11.04, and now it's very difficult for me to tell which tab is the selected one.
On my screen, the colors look more similar the further down I slouch in my chair (i.e. angle of view).
If I change the…

itsadok
- 2,904
102
votes
11 answers
How can I update youtube-dl?
I use youtube-dl to download videos for watching later offline. Usually, it works fine. However, due to frequent changes on the video sites, it sometimes requires a quick update. It wasn't a problem before on 13.04 but after upgrading to 13.10, I…

Damn Terminal
- 2,686
102
votes
3 answers
What are some good GUI diff and merge applications available for Ubuntu?
What are some alternatives to WinMerge and the pros and cons of each?

Judge Maygarden
- 1,185