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Ask Ubuntu

Questions tagged [system]

For questions regarding the function of the entire operating system and issues that affect users system-wide.

902 questions
634
votes
4 answers

How do I check the version of Ubuntu I am running?

How can I check my current Ubuntu version through the command-line and GUI?
LMatt
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498
votes
2 answers

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 should I add them? Related: How to understand…
user125111
173
votes
18 answers

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 there are many tools I can use, but I am looking…
Qasim
  • 22,162
120
votes
10 answers

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 in Home Folder it only gives me the HD capacity.…
Moron
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102
votes
6 answers

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?
sam
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100
votes
4 answers

command to check RAM slots in motherboard?

I have a Samsung NP300e5Z Core 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 to check how many memory slots…
purna ram
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83
votes
3 answers

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?
Michael Durrant
  • 11,076
80
votes
1 answer

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 983M 4.0K 983M 1% /dev tmpfs …
Raja G
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73
votes
4 answers

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 apt-get clean which improved the scenario only…
Masroor
  • 3,203
71
votes
10 answers

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 can be removed or reset on a system wide basis?
Khaja Minhajuddin
  • 1,320
68
votes
7 answers

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 Name"/0: Read-only file system W: Not using…
MathCubes
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54
votes
11 answers

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?
Suraj Maurya
  • 541
52
votes
3 answers

What does examples.desktop do?

What's the point of the examples.desktop file?
myusuf3
  • 35,659
50
votes
6 answers

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 everything works in the end. However, the fact that…
Jan
  • 3,658
44
votes
3 answers

What is meant by the "Ubuntu kernel"?

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?
lana
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