Questions tagged [system]
For questions regarding the function of the entire operating system and issues that affect users system-wide.
883
questions
594
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answers
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How do I check the version of Ubuntu I am running? [duplicate]
How can I check my current Ubuntu version through the command-line and GUI?
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486
votes
2
answers
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Differences between /bin, /sbin, /usr/bin, /usr/sbin, /usr/local/bin, /usr/local/sbin
I have six directories with command files. These are /bin, /sbin, /usr/bin, /usr/sbin, /usr/local/bin and /usr/local/sbin.
What are the differences between these? If I'm writing my own scripts, where ...
user125111
172
votes
18
answers
367k
views
What system monitoring tools are available?
I am looking for system monitoring tools which are GUI and CLI or web-based which include basic functions such as:
CPU Usage
Ram Usage
Swap Usage
Disk Usage ( Space / I/O )
Heat Monitoring
I know ...
- 22.1k
113
votes
9
answers
745k
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How do I check system specifications?
I am total noob in Linux. I wanna know what is the equivalent of "My Computer" in Ubuntu 11.04. I want to check my computer specs such as Processor Speed, Memory, and etc.
Whenever I check properties ...
- 2,085
100
votes
6
answers
74k
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Turn off error sound on Ubuntu 18.04
How do I turn off the Ubuntu error sound (especially on the terminal) in Ubuntu 18.04?
- 2,816
93
votes
4
answers
116k
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command to check RAM slots in motherboard?
I have a Samsung NP300e5Z i5 laptop. I am using Ubuntu 14.04 in this laptop. my system RAM is 4GB and i want to increase it but i am not sure how many memory slots are available in my system. so, how ...
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83
votes
3
answers
47k
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Dropbox error - 'echo 100000 | sudo tee / proc/sys/fs/inotify/max_user_watches'
Dropbox gives me an error that mentions echo tee 100000 but then it disappears.
How to fix or remove msg?
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79
votes
1
answer
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What are "/run/lock" and "/run/shm" used for?
I just want to know where and how /run/lock and /run/shm can help our PC .
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 56G 13G 41G 24% /
udev ...
- 103k
73
votes
4
answers
203k
views
Very large log files, what should I do?
(This question deals with a similar issue, but it talks about a rotated log file.)
Today I got a system message regarding very low /var space.
As usual I executed the commands in the line of sudo ...
- 3,153
69
votes
10
answers
25k
views
How can I disable Ctrl+Q for all applications (system wide)?
A lot of applications like Firefox, Chrome etc, get closed when I accidentally press Ctrl+Q instead of Ctrl+W because of the proximity of the Q and W keys on the keyboard. Is there a way this shortcut ...
- 1,300
64
votes
7
answers
641k
views
How to Fix "Read-only file system" error when I run something as sudo and try to make a folder/file?
When I try to save something or rename a file/folder it say this error " Read-only file system" or run something as root in the terminal it say this error
sudo: unable to open /var/lib/sudo/"My User ...
- 5,674
54
votes
11
answers
237k
views
How to install Robomongo on Ubuntu?
I am using MongoDB and I want to install Robomongo on Ubuntu.
Are there any instructions on how I can I install Robomongo on my machine?
- 541
51
votes
3
answers
47k
views
49
votes
6
answers
59k
views
Find (and reinstall) packages with corrupted files (without breaking anything)
I usually prefer to fix a Linux system than to reinstall from scratch. My computers have seen many distribution upgrades and a list of PPAs or third-party repositories. APT usually makes sure that ...
- 3,628
44
votes
3
answers
9k
views
What is meant by the "Ubuntu kernel"? [duplicate]
My thinking was that all Linux distributions used one kernel (the one developed by Linus Torvalds).
So why do all Linux distributions have their own kernel?
- 565
40
votes
9
answers
33k
views
Ubuntu desktop suddenly points to home folder
As of now, my desktop has begun showing the contents of my home folder (~) instead of the contents of ~/desktop. I must have changed something, but I have no idea what, or what I was doing exactly ...
- 2,932
40
votes
1
answer
81k
views
Where are passwords saved?
This is a weird question to ask, but where are the passwords saved? I mean they must be somewhere for comparing every time. So where are system and network passwords saved?
- 7,898
39
votes
4
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Whats the difference between Unix, Linux and Ubuntu?
What is Unix, Linux, Ubuntu?
Are they the same thing or different versions or completely different stuff?
This has always made me confused, any explanation would be great.
38
votes
4
answers
36k
views
What are the disadvantages of having a dot in a user name?
A student just asked what could be the downside of having a dot (. ) in the name of the user. For example: john.doe
How will this affect the system or any apps for that matter?
- 213k
37
votes
4
answers
20k
views
Emacs-like keybindings system-wide?
Is there a way to set Emacs-like keyboard shortcuts (at least the subset mentioned below) for the whole OS? This is possible in some apps such as the terminal, Emacs (go figure :) and additionally ...
- 2,650
36
votes
5
answers
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Where do I find system sounds?
After installing gm-notify I see the option of hearing a sound every time a new e-mail arrives in my Gmail inbox, but I don't know where Ubuntu (10.4) stores the system sounds to assign one. Any ideas?...
- 1,409
34
votes
3
answers
83k
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How to increase max open files limit on Ubuntu 18.04?
I've run ulimit -n 65536, added the following lines to /etc/security/limits.conf:
* soft nofile 65536
* hard nofile 65536
alix soft nofile 65536
alix hard nofile 65536
root soft nofile 65536
...
- 1,053
34
votes
5
answers
35k
views
Is there a way of leveling/compressing the sound system-wide?
As a Laptop user, I'm sure that a lot of people, even the ones using Netbooks would have already gone through this problem. Especially when listening to podcasts, and using it as an example, the sound ...
- 341
33
votes
3
answers
137k
views
System Testing tool for Ubuntu
I want to test my hardware function and find errors.
Is there any System Testing tool available for Ubuntu ?
user224082
30
votes
4
answers
24k
views
What are the common maintenance tasks?
When i was using windows, i used to run defrags, ccleaner and revouninstaller once a month to keep the system and the registry clean.
I know ubuntu (and all linux distro) has a different system ...
- 1,970
30
votes
0
answers
91k
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What can I do to find the crash reason [duplicate]
I'm running Ubuntu 18.04, it crashes about once a week. Sometimes while watching video sometime or just web-browsing. I check the system log and kernel log they don't have any strange output at the ...
- 1,203
28
votes
8
answers
132k
views
GConf Error: No D-BUS daemon running?! How to reinstall or fix?
After installing Konquerer and restarting my laptop i got the following error while trying to open, edit or access files as root from within Terminal (which is existencial for me).
root@linuxBox:/...
- 9,567
23
votes
1
answer
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views
How many files can I have on a single directory?
This question is related to this one.
I work with animation, which generates a LOT of files (+/- 1,000,000) typically stored on a single directory. On Mac Os X, some bugs came up with more than +/-30,...
- 661
21
votes
7
answers
34k
views
How to make my proxy settings change depending on the network I connect to?
My company's corporate network requires me to set a network proxy to access the net, but when I am anywhere else, I don't need it.
The proxy settings in Ubuntu (System -> Preferences -> Proxy server) ...
- 2,633
19
votes
2
answers
27k
views
Check system is Little Endian OR Big Endian
How to check which Byte Order my system is Using ?
Little Endian OR Big Endian ?
- 5,847
18
votes
6
answers
178k
views
How I do a system restore?
Problem I Faced
I installed something that crashed my Wifi drivers that I compiled earlier.
Un-installing the same package doesn't helped.
Finally, I re-compiled my wifi drivers and things are good.
...
- 295
16
votes
2
answers
11k
views
How does one get System Load Indicator (or something similar) working in 17.10?
After upgrading to 17.10, my System Load Indicator (indicator-multiload) applet turned into a tiny little box where it's no longer possible to see the different live graphs.
As per How To Use ...
- 1,155
16
votes
2
answers
10k
views
How can I access system mail in /var/mail/ via Thunderbird?
I've got cron jobs sending mail to my user at /var/mail. I know how to access that at the command line with the mail command. But, while a big command line fan, I do not like reading mail (even system ...
- 1,400
15
votes
2
answers
24k
views
How to see what's going on during shutdown
Since a few weeks, Ubuntu freezes almost everytime when I shut it down.
I know it because the shutdown animation stops and nothing is responsive: Ctrl+Alt+Del or AltGr+Syst+reisub don't make any ...
- 4,733
14
votes
7
answers
35k
views
System monitoring with email notifications
I currently have an Ubuntu Server 16.04 LTS and I want to be able to receive email notifications with information about the resource usage on my server. CPU, memory, swap, you name it.
I understand ...
- 243
13
votes
2
answers
5k
views
What can `inxi` be used for?
There are several questions and answers here that include the output of inxi. What can inxi be used for?
- 43.1k
13
votes
1
answer
542
views
Accidentally ran non-recursive chmod 754 at root directory level
I accidentally ran a chmod 754 ./ when I was at the root directory on the server which runs Ubuntu 18.04.
Now I cannot use commands like sudo or pkexec, nor can I change anything. What should I do? ...
- 233
12
votes
3
answers
56k
views
How to install CPU-G on Ubuntu
How to install CPU-G on Ubuntu , so i can use it to view information about my desktop hardware .
- 38.2k
11
votes
4
answers
12k
views
Terminator doesn't show System Title Bar
after I reboot my system for some updates, my Terminator stopped showing the system tool bars... Anyone knows why?
- 153
11
votes
3
answers
28k
views
Security camera system server
I'd like to setup a Security Camera system which is captures and stores video streams into Ubuntu Server From 2 wireless Cameras.
Which type of motion-detecting wireless camera you suggested?
Are ...
- 21.3k
10
votes
2
answers
13k
views
How can I read system mail?
Which packages need to be installed in order for system mail to be generated from for example a nightly rkhunter scan run by cron?
erling thalt
10
votes
2
answers
11k
views
Ubuntu 16.04 kworker using high CPU constantly
On Ubuntu 16.04 computer I saw kworker take up 80% of a CPU, consistently.
I generated a perf report:
sudo apt-get install linux-tools-common linux-tools-$(uname -r)
Record some 10 seconds of ...
- 210
10
votes
2
answers
585
views
Does changing the theme improve system performance?
I really have this feeling that after changing the theme on my Ubuntu (10.10 - but it also happened on a different version) the system is much quicker, or to say more precisely, the system is not ...
- 173
9
votes
4
answers
39k
views
How to change input language?
I want to be able to switch between my input languages, but I can't drag and drop the languages in language support because the languages seem to be greyed out, what should I do?
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3
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Will Ubuntu One support OS Settings sync?
Being new to Linux and to Ubuntu, I've taken quite some time to tune it to my needs on my netbook. As I'm now convinced by the OS, I plan to install it on my desktop in the next few days. I was hoping ...
- 93
9
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3
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5k
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Is it possible to do a remote wipe of a system?
My office had a break-in over the weekend, and several laptops were stolen. Mine wasn't one of them, but I'm curious - the owners of the stolen computers (Windows and Mac) are all talking about remote ...
- 16.2k
9
votes
2
answers
7k
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Tons of general protection faults
I recently upgraded my home server from Ubuntu 10.04 to 12.04.1. It runs the linux-image-server kernel, x86_64 arch.
There's nothing particularly unusual running, I think -- a deluge daemon, apache2, ...
- 419
9
votes
1
answer
2k
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Gnome Shell related JS errors seen in syslog file during investigating system freeze
I'm using Ubuntu 20.04 LTS (upgraded from original install of 18.04.4 LTS) on an HP Eitebook 2560 Intel Core i5
Trying to investigate a system issue where the UI became unresponsive at the lock ...
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8
votes
3
answers
4k
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How to edit system files with the Kate editor? [duplicate]
If I try to use sudo kate to edit a system file, I get the message:
Executing Kate as root is not possible.
So how can I edit a system file?
I put up this question so that I could answer it myself. ...
- 2,141
8
votes
2
answers
4k
views
Printing odd/even pages using system dialogue ubuntu
I am printing (Basically saving to file) a pdf. I want to print only the odd/even pages from a PDF. In the printing dialogue box which appears I see only 3 options in the range
All Pages
Current Page
...
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