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1500 questions
100
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10 answers

Linux: How to find the device driver used for a device?

If my target has one device connected and many drivers for that device loaded, how can I understand what device is using which driver?
Deepu
100
votes
3 answers

How to rsync multiple source folders

I want to rsync multiple sources and I wonder the best way to achieve that. e.g. /etc/fstab /home/user/download I thought about 3 solutions : Solution 1 multiple call to rsync rsync -a /etc/fstab bkp rsync -a /home/user/download bkp con : harder…
user1437346
  • 1,131
100
votes
8 answers

Is it possible to check where an alias was defined?

An alias, such as ll is defined with the alias command. I can check the command with things like type ll which prints ll is aliased to `ls -l --color=auto' or command -v ll which prints alias ll='ls -l --color=auto' or alias ll which also…
polemon
  • 11,431
100
votes
3 answers

How to step-into, step-over and step-out with GDB?

I typed help while I was in the GDB but didn't find anything about step-into, step-over and step-out. I put a breakpoint in an Assembly program in _start (break _start). Afterwards I typed next and it finished the debugging. I guess it was because…
Pichi Wuana
  • 1,289
100
votes
2 answers

Why do we need to use visudo instead of directly modifying the sudoers file?

I understand that if you want to modify who can use sudo and what they can do with it that you should use visudo. I know I'm not supposed to directly modify the /etc/sudoers file myself. What is it that visudo does that directly modifying the file…
Dason
  • 1,102
100
votes
11 answers

Is there a way to stop having to write 'sudo' for every little thing in Linux?

I'm going to be doing a fair amount of PHP work shortly, and I'm interested in learning RoR, so I installed Linux Mint 12 in my VirtualBox. The most frustrating aspect of the switch, so far, has been dealing with Linux permissions. It seems like I…
Major Productions
  • 1,125
100
votes
10 answers

How to work around "Release file expired" problem on a local mirror

I have a local mirror (created with debmirror), and when I run apt-get update after a few days, I get this: E: Release file expired, ignoring file:/home/wena/.repo_bin/dists/sid/Release (invalid since 14h 31min 45s) How do I work around that?
tshepang
  • 65,642
100
votes
2 answers

For loops in zsh and bash

I have noticed there are two alternative ways of building loops in zsh: for x (1 2 3); do echo $x; done for x in 1 2 3; do echo $x; done They both print: 1 2 3 My question is, why the two syntaxes? Is $x iterating through a different type of…
Amelio Vazquez-Reina
  • 41,161
100
votes
13 answers

Do I need swap space if I have more than enough amount of RAM?

From what I understand, the purpose of a swap partition in Linux is to free up some "not as frequently accessed" information from RAM and move it to a specific partition on your harddrive (at the cost of making it slower to read from or write to),…
IQAndreas
  • 10,345
100
votes
2 answers

What is kernel ip forwarding?

I have seen on many blogs, using this command to enable IP forwarding while using many network security/sniffing tools on linux echo 1 > /proc/sys/net/ipv4/ip_forward Can anyone explain me in layman terms, what essentially does this command do?…
Madhur Ahuja
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100
votes
6 answers

How do I refresh Gnome 3 applications

I just added and modified a .desktop file in my /home/user/.local/share/applications folder. Is there any way to refresh the icon and caption in the list of applications without logging out?
Peter Turner
  • 1,654
100
votes
5 answers

Pasting X selection (not clipboard contents) with keyboard

I'd like to be able to paste the X selection using the keyboard. Currently I have to use the middle mouse button to do this. I gather that faking a middle mouse button press is fairly easy to do, but such a solution would also require moving the…
intuited
  • 3,538
99
votes
2 answers

Use shared libraries in /usr/local/lib

I have build some libraries from sources, and the files after make install are in /usr/local/lib For example, in my case I have the file libodb-2.2.so which is in this directory. However when I launch the executable that has linked with libodb, I…
Stephane Rolland
  • 4,227
99
votes
12 answers

git pull from remote but no such ref was fetched?

I have a git mirror on my disk and when I want to update my repo with git pull it gives me error message: Your configuration specifies to merge with the ref '3.5/master' from the remote, but no such ref was fetched. It also gives me: …
Micromega
  • 4,211
99
votes
5 answers

How to check available package versions in rpm systems?

If I want to check available versions of a package in Debian, I run apt-cache policy pkgname which in the case of wajig gives: wajig: Installed: 2.01 Candidate: 2.01 Version table: *** 2.01 0 100 /var/lib/dpkg/status 2.0.47 0 …
tshepang
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