Questions tagged [debian]
Questions specific to the Debian official distribution (stable, testing, or unstable); if you are using a derivative of Debian (e.g. Mint, Ubuntu, Kali, etc), then use that distribution’s tag instead.
14,878
questions
362
votes
18
answers
1.1m
views
How do I set my DNS when resolv.conf is being overwritten?
Most of the info I see online says to edit /etc/resolv.conf, but any changes I make there just get overridden.
$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by ...
- 4,521
339
votes
5
answers
102k
views
What's the story behind Super Cow Powers?
As we know, apt-get has Super Cow Powers and aptitude does not:
$ apt-get --help | grep -i cow
This APT has Super Cow Powers.
$ aptitude --help | grep -i cow
...
- 108k
280
votes
10
answers
126k
views
What is the real difference between "apt-get" and "aptitude"? (How about "wajig"?)
I know that both apt-get and aptitude are command line package management interfaces on Debian derived Linux, with different options, but I'm still somewhat confused. Under the hood, aren't they ...
- 3,774
260
votes
4
answers
1.1m
views
How to enable diffie-hellman-group1-sha1 key exchange on Debian 8.0?
I am unable to ssh to a server that asks for a diffie-hellman-group1-sha1 key exchange method:
ssh 123.123.123.123
Unable to negotiate with 123.123.123.123 port 22: no matching key exchange method ...
- 2,933
243
votes
3
answers
57k
views
Why is 'ls' suddenly wrapping items with spaces in single quotes?
I just noticed that on one of my machines (running Debian Sid) whenever I type ls any file name with spaces has single quotes surrounding it.
I immediately checked my aliases, only to find them intact....
- 3,962
207
votes
5
answers
219k
views
Failed to fetch jessie backports repository
I'm using a docker image as a base for my own development that adds the jessie backports repository in its Dockerfile and uses that to install a dependency. This image uses the following command to ...
- 2,013
177
votes
1
answer
374k
views
How to apt-delete-repository? [duplicate]
I would like to run the reverse of this command to remove the non-compatible repository in Debian 8.1
sudo add-apt-repository -y ppa:nemh/systemback
where the command add-apt-repository is in the ...
- 6,808
173
votes
10
answers
309k
views
"no public key available" on apt-get update
When performing apt-get update, I get the following error:
root@ADS3-Debian6:/home/aluno# apt-get update
Atingido http://sft.if.usp.br squeeze Release.gpg
Ign http://sft.if.usp.br/debian/ squeeze/...
- 4,433
163
votes
4
answers
714k
views
-bash: sudo: command not found
I am trying to deploy django app.
When I print
apt-get update
I see
W: Unable to read /etc/apt/apt.conf.d/ - DirectoryExists (13: Permission denied)
W: Unable to read /etc/apt/sources.list.d/ - ...
- 1,797
160
votes
6
answers
268k
views
How can I communicate with a Unix domain socket via the shell on Debian Squeeze?
I’m running a Debian Squeeze web server. I’ve installed memcached on it, and configured memcached to listen on a Unix domain socket (at /tmp/memcached.sock), as it only needs to receive messages from ...
- 3,537
158
votes
4
answers
443k
views
How to add repository from shell in Debian?
In Ubuntu one can add a repository via following command -
sudo add-apt-repository ppa:yannubuntu/boot-repair
As Ubuntu is based on Debian code base, I was expecting that the same would work in ...
- 8,625
136
votes
12
answers
134k
views
List packages on an apt based system by installation date
How can I list installed packages by installation date?
I need to do this on debian/ubuntu. Answers for other distributions would be nice as well.
I installed a lot of stuff to compile a certain ...
- 3,151
133
votes
3
answers
179k
views
gpg: keyserver receive failed: No dirmngr
While trying to receive keys in my Debian Stretch server, I get this error:
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
Executing: /...
- 8,839
131
votes
4
answers
185k
views
How to update Linux "locate" cache
How can I update the cache / index of locate? I installed new packages and the files are clearly not yet indexed.
So which command do I have to commit, in order for the indexer to trigger?
I'm ...
- 1,441
126
votes
9
answers
297k
views
How to install Python 3.6?
I'd like to install the latest Python, which is 3.6 at the time of this post. However, the repository is saying that Python 3.4.2 is the newest version.
I've tried:
$ sudo apt-get update
$ sudo apt-...
- 1,494
123
votes
7
answers
273k
views
Error when trying to connect to bluetooth speaker: `org.bluez.Error.Failed`
I'm running Debian Jessie 8.2. I have a bluetooth USB dongle connected to my machine.
I run sudo bluetoothctl -a then do the following:
[NEW] Controller 5C:F3:70:6B:57:60 debian [default]
Agent ...
- 801
113
votes
6
answers
409k
views
List of available services
Is there any command that would show all the available services in my wheezy Debian based OS?
I know that in order to see all the running services you can use service --status-all.
- 1,389
112
votes
3
answers
89k
views
What's the difference between /usr/lib/systemd/system and /etc/systemd/system?
Before all the unit files were in /etc/systemd/system/ but now some are showing up in /usr/lib/systemd/system (<- on CentOS, or /lib/systemd/system <- on Debian/Ubuntu), what is the difference ...
- 1,251
108
votes
4
answers
128k
views
How do I know which version of Debian I'm running?
In a tutorial, I'm prompted "If you are running Squeeze, follow these instructions..." and "If you are running Wheezy, follow these other instructions..."
When I run uname, I get the following ...
- 10.2k
107
votes
5
answers
201k
views
Possible missing firmware /lib/firmware/i915/* for module i915
I am getting these warnings every time I update my initramfs image(-s) with update-initramfs on my Dell PowerEdge T20 server running GNU/Linux Debian Buster 10.0. Is there a fix?
W: Possible missing ...
- 27.8k
105
votes
5
answers
300k
views
Installing a .deb package on Arch - Is it possible?
The problem is simple - I have a .deb package and I want to install it on my Arch Linux. Is this possible? If yes, how?
- 1,153
95
votes
6
answers
75k
views
How to COMPLETELY turn off system beep sounds forever for good for real
I use Nautilus to explore my files. I use a Debian-based OS with KDE Plasma 5.
I use the keyboard a lot. When I press the key up when navigating files, if I'm already at the extremity of the list of ...
95
votes
4
answers
178k
views
Purpose and typical usage of /etc/rc.local
The header looks like this:
#!/bin/sh -e
#
# rc.local - executed at the end of each multiuser runlevel
#
# Make sure that the script will "exit 0" on success or any other
# value on error.
What is ...
- 6,763
94
votes
5
answers
132k
views
Problem of Can't set locale; make sure $LC_* and $LANG are correct!
When I always try to install new package I get this message:
Can't set locale; make sure $LC_* and $LANG are correct!
perl: warning: Setting locale failed.
perl: warning: Please check that your ...
- 1,189
91
votes
5
answers
131k
views
Set systemd service to execute after fstab mount
I'm working on a systemd .service script that is supposed to start after a CIFS network location is mounted via /etc/fstab to /mnt/ on boot-up.
The script waits for an OpenVPN dependency script to ...
- 1,671
91
votes
5
answers
137k
views
apt-get fails: The method driver /usr/lib/apt/methods/https could not be found
I tried to update my OS Debian jessie using the terminal and i get an error :
“E: The method driver /usr/lib/apt/methods/https could not be found.” error?
My sources.list :
deb http://httpredir....
- 63.6k
91
votes
4
answers
108k
views
How do I change the default text editor in the Debian (squeeze) distro
"Joe's own editor" does not come naturally to me. How do I change to using nano or vim?
I've tried
export EDITOR=nano
but it doesn't seem to be respected. I'd like visudo to respect this as well.
- 1,011
91
votes
14
answers
201k
views
How to unload kernel module 'nvidia-drm'?
I'm trying to install the most up-to-date NVIDIA driver in Debian Stretch. I've downloaded NVIDIA-Linux-x86_64-390.48.run from here, but when I try to do
sudo sh ./NVIDIA-Linux-x86_64-390.48.run
as ...
- 1,732
90
votes
13
answers
318k
views
Tab completion errors: bash: cannot create temp file for here-document: No space left on device
When using the tab bar, I keep getting this error:
bash: cannot create temp file for here-document: No space left on device"
Any ideas?
I have been doing some research, and many people talk about ...
- 1,002
89
votes
1
answer
156k
views
Easy command line method to determine specific ARM architecture string?
I'm trying to write a script which will determine actions based on the architecture of the machine. I already use uname -m to gather the architecture line, however I do not know how many ARM ...
- 2,610
88
votes
6
answers
169k
views
Why do iptables rules disappear when restarting my Debian system?
I add this rule:
sudo iptables -t nat -A OUTPUT -d a.b.c.d -p tcp \
--dport 1723 -j DNAT --to-destination a.b.c.d:10000
When restart computer rules are deleted. Why?
What I can do to make the ...
- 3,535
88
votes
4
answers
77k
views
What does adduser do that useradd doesn't?
In addition to the more widespread useradd, Debian based systems also contain an additional adduser command which provides a higher level interface for adding users and some related tasks. There are ...
- 33.7k
86
votes
3
answers
248k
views
How do services in Debian work, and how can I manage them?
In Windows I have the services manager, where I see all system services, that can be started through Windows itself, I set up the user it uses, the rights management is in there, and I can pass ...
- 1,000
83
votes
7
answers
69k
views
What directories do I need to back up?
What are the directories one should back up, in order to have a backup of all user-generated files?
From a vanilla debian install, I can do enough apt to get the packages that I want. So if I don't ...
- 14.2k
78
votes
3
answers
123k
views
How do I run 32-bit programs on a 64-bit Debian/Ubuntu?
I have a 64-bit (amd64 a.k.a. x86_64) Debian or Ubuntu installation. I need to run 32-bit (i386/i686) programs occasionally, or to compile programs for a 32-bit system. How can I do this with a ...
78
votes
2
answers
218k
views
Debian: The repository does not have a Release file
Whenever trying to install some programs from source, or specifically running apt update, I receive this message:
E: The repository 'http://ftp.ca.debian.org/debian stretch/updates Release' does not ...
user77647
77
votes
3
answers
69k
views
OpenSSH: How to end a match block
I'm using a Match block in OpenSSH's /etc/ssh/sshd_config (on debian) to restrict some users to SFTP:
# my stuff
Match group sftponly
X11Forwarding no
AllowTcpForwarding no
ForceCommand ...
- 3,543
77
votes
3
answers
148k
views
Can I rollback an apt-get upgrade if something goes wrong?
Is there a way, before starting an aptitude upgrade or apt-get upgrade, to set up something so that you can "easily" rollback your system to the "apt" state it was before the actual upgrade, if ...
- 19.4k
75
votes
6
answers
137k
views
How to safely turn off swap permanently and reclaim the space? (on Debian Jessie)
I installed Debian Jessie with default partitioning on my SSD drive. My current disk partitioning looks like this:
As I have 16GB of RAM, I assume I don't need swap. But since I have other disk ...
- 27.8k
74
votes
11
answers
187k
views
Backspace, Tab not working in terminal (using ssh)
When I ssh into another machine with Debian with my account(with sudo permissions), my backspace key generates some awkward symbols on pressing. Also Tab & del keys don't work too.
On the other ...
- 849
74
votes
3
answers
203k
views
Using ip addr instead of ifconfig reports "RTNETLINK answers: File exists" on Debian
I have a Debian system working as a wireless router with eth0 and wlan0. Now I added an additional network manually on eth1 with ifconfig:
alix:~# ifconfig eth1 192.168.0.2 netmask 255.255.255.0
alix:...
- 3,461
71
votes
7
answers
105k
views
Crontab never running while in /etc/cron.d
Here's what I did on Debian Jessie:
install cron via apt-get install cron
put a backup_crontab file in /etc/cron.d/
However the task is never running.
Here are some outputs:
/# crontab -l
no ...
- 849
70
votes
4
answers
64k
views
Full-upgrade to Debian testing fails due to libc6-dev : Breaks: libgcc-8-dev
I've just switched to bullseye (see sources below)
deb http://deb.debian.org/debian/ testing main contrib non-free
deb-src http://deb.debian.org/debian/ testing main contrib non-free
deb http://deb....
- 2,453
69
votes
5
answers
308k
views
Where in Apache 2 do you set the ServerName directive globally?
NOTE: This is related to my question: "Apache 2.4 won't reload, any problem with my configuration?".
I'm trying to test a local site, locally. As I understand Apache 2 (and perhaps Apache as well) ...
- 12k
68
votes
4
answers
138k
views
Cannot update APT list: "repository no longer has a Release file"
I cannot run apt-get update as I encounter the following error:
# apt-get update
Hit:1 http://ftp.br.debian.org/debian testing InRelease
Ign:2 http://security.debian.org/debian-security testing/...
- 1,797
68
votes
1
answer
97k
views
dmesg: read kernel buffer failed: Permission denied
Since recently Debian has changed the default behavior for dmesg and I cannot use it simply from my local user.
% dmesg
dmesg: read kernel buffer failed: Operation not permitted
Same goes for:
% ...
- 2,708
67
votes
6
answers
155k
views
Moving /var, /home to separate partition
I am attempting to move some folders (such as /var and /home) to a separate partition after reading this guide:
3.2.1 Choose an intelligent partition scheme
I was able to move one folder ...
- 811
67
votes
3
answers
54k
views
How to undo sudo add-apt-repository?
I ran
sudo add-apt-repository ppa:noobslab/indicators
to install my-weather-indicator but it requires GTK3 and I don't want to proceed further.
So I'd like to undo that command. I've checked my /etc/...
- 2,411
66
votes
3
answers
159k
views
wkhtmltopdf - QXcbConnection: Could not connect to display
How to run wkhtmltopdf headless?!
Installation on Debian Whezzy
apt-get install wkhtmltopdf
Command
wkhtmltopdf --title "$SUBJECT" -q $SOURCEFILE $OUTPUTFILE
Error
QXcbConnection: Could not ...
- 1,747
64
votes
12
answers
153k
views
gpg: keyserver receive failed: Server indicated a failure
This error has arise when I add gns repository and try to use this command:
#sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F88F6D313016330404F710FC9A2FD067A2E3EF7B
the error is:
gpg:...
