Linux refers to the family of Unix-like computer operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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59
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8answers
30k views

Reload a Linux user's group assignments without logging out

When assigning a user's secondary group list using: # usermod -G <grouplist> <user> is it possible to force this group assignment to take effect without logging out all running ...
75
votes
3answers
175k views

How do I get Java support on Google Chrome in Linux?

Is there a way to run Linux Google Chrome with Java support?
48
votes
12answers
54k views

How to start GUI linux programs from the command line, but separate from the command line?

I've searched for this before, but have never been able to find an answer. In Windows, if I have a console window open, type winmine, and press enter, Minesweeper will appear, completely separate ...
46
votes
1answer
7k views

If I buy a computer with Windows 8 and Secure Boot, will I still be able to install Linux?

I've heard a lot about how Microsoft is implementing UEFI Secure Boot in Windows 8. Apparently it prevents "unauthorized" bootloaders from running on the computer, to prevent malware. There's a ...
26
votes
9answers
63k views

How to convert Word (doc) to PDF in linux?

I have a set of files in .doc format, that need to be converted to .pdf format. I am using Ubuntu linux.
35
votes
3answers
71k views

Linux: find out what process is using all the RAM?

Before actually asking, just to be clear: yes, I know about disk cache, and no, it is not my case :) Sorry, for this preamble :) I'm using CentOS 5. Every application in the system is swapping ...
16
votes
1answer
7k views

Making 256-color AND Line drawing characters both work in PuTTY

I'm having trouble setting up PuTTY with Ubuntu. I'm trying to get line characters to work in aptitude as well as 256-color support, but can only get one or the other. Ubuntu Config Using 64-bit ...
46
votes
7answers
37k views

How to throttle bandwidth on a Linux network interface?

Is there a way to constrain the bandwidth on a NIC in linux? I'd like to be able to simulate an arbitrarily slow connection.
29
votes
4answers
8k views

Two keyboards on one computer. When I write with A i want a US keyboard layout, when I use B i want Swedish. Possible?

I have a laptop which I use an external keyboard with. When I type using the external keyboard I want to use a US keyboard layout, since that's the type of external keyboard I have. On the other hand, ...
25
votes
6answers
17k views

How can I diff two XML files?

On Linux, how could I generate a diff between two XML files? Ideally, I would like to be able configure it to some things strict, or loosen some things, like whitespace, or attribute order. I'll ...
22
votes
4answers
23k views

Can I hibernate Linux without a swap partition?

I hadn't set up a swap partition on my PC, because a) I have plenty of RAM (8 GB) and b) I have large harddrives that I didn't want to chop into tiny pieces, so my smallest partitions are 50 GiB, and ...
41
votes
6answers
55k views

How to list folders using bash commands?

Is there any way to list just the folders in a directory using bash commands? ( as the ls command lists all the files and folders )
44
votes
11answers
9k views

What is the relationship between Unix, Linux, Ubuntu, Debian and Android?

What is the relationship between Unix, Linux, Ubuntu, and Debian? I suspect they are all Operating Systems that are based upon one another - similar to how Windows is based on DOS. Is my suspicion ...
20
votes
5answers
36k views

What is the meaning of “chmod 666”?

I am using Linux. What is the meaning of chmod 666?
14
votes
3answers
12k views

How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG

How can I create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG? I used this command to convert an input.avi file to a series of PNG frames: ffmpeg -y -i input.avi -an ...
27
votes
7answers
22k views

How to know which Linux Distribution I'm using?

How to know which Linux Distribution I'm using? uname -a gives Linux xxxxxx.net 2.6.9-42.0.3.EL.wh1smp #1 SMP Fri Aug 14 15:48:17 MDT 2009 i686 i686 i386 GNU/Linux How can I know this is ...
21
votes
14answers
3k views

How to become a Linux superuser? [closed]

What process/reference/book/faq/tutorial/quickstart/primer/etc would you recommend to a lifelong Windows guy who wants to become a Linux superuser? EDIT Perhaps I should provide a little bit of ...
38
votes
8answers
39k views

ffmpeg: create a video from images

Is it possible to use ffmpeg create a video from a set of sequences, where the number does not start from zero? For example, I have some images [test_100.jpg, test_101.jpg, test_102.jpg, ..., ...
35
votes
3answers
2k views

Say`vimrc`or `screenrc`, what does the `rc` mean?

What does the rc mean?
19
votes
13answers
3k views

Tiling Window Manager

I've been looking into tiling window managers because I'm tired of manually positioning and resizing all my windows whenever I want to see some information side by side. However, the tiling window ...
17
votes
1answer
25k views

Why is the “top” command showing a CPU usage of 799%?

I am running a process in a 4 core Ubuntu server. However, top command shows that the CPU usage is 799% all the time. How can this be possible? I know for multi core CPUs, more than 100% CPU usage ...
10
votes
3answers
16k views

Create Virtualbox image of a physical partition

I've a drive with Fedora and Windows 7 on different partitions with dual boot. Now, while running Fedora, I'd like to suck up the Windows partition and create an image I can run in VirtualBox - how ...
9
votes
4answers
21k views

No /mnt/hgfs in Ubuntu guest under VMWare Fusion

I just installed Ubuntu 13.04 inside of VMware Fusion Pro 5. I have the virtual machine configured for read-only sharing of my home directory, but there's no /mnt/hgfs directory and there's no ...
8
votes
7answers
2k views

Cleaning windows viruses from linux

In a dual-boot system, does anyone have experience dealing with viruses that hit windows from linux? (disambiguation note: dealing with them from linux .. ) The C:\ in windows is mounted to ...
34
votes
5answers
5k views

What is the equivalent of Linux's “~” (tilde) in Windows?

In Linux, we can go to the user home by entering the tilde (~) character after cd: cd ~ How to do the same in Windows? Each time, I need to type: cd C:\Document and Settings\freewind That's too ...
12
votes
5answers
4k views

How to record screencast on Linux with mouse clicks and key hits shown

Basically I'm looking for an application to record a series of tutorials for a program I wrote. It's important to show the actions like mouse click, mouse right click, and all what's coming out from ...
12
votes
8answers
9k views

What Linux distribution has the most up-to-date packages?

Ubuntu's release schedule is just too slow. I want the absolute latest version of everything. Even if it's slightly unstable. Which distribution will give me this without having to manually install ...
8
votes
3answers
2k views

Remote into Linux workstation behind a firewall

Let's say I have a Linux workstation at work, behind a firewall. So even though I may have a remote access server set up on it (such as the most excellent NoMachine NX Server), I can't access it from ...
4
votes
5answers
31k views

External Hard Drive bad sectors recover/mark utility in linux

I've just installed the new version of Ubuntu, Karmic Koala, in my laptop. Everything is fine, except for the fact the system identified about 300 bad sectors in my 1TB external hard drive. I'd like ...
14
votes
6answers
36k views

Is there Linux support for TRIM on SSD drives?

Does any know if there is a way to enable TRIM support on Linux for SSDs? This is included with Windows 7, and I was surprised that I couldn't find much information about it under Linux. Info on SSD ...
13
votes
5answers
7k views

How to join two CSV files?

Suppose you have one CSV file with 2 fields: ID and email. You have another file with 2 fields: email and name. How can you produce a file with all three fields joined on email?
10
votes
2answers
2k views

Tab-completion with directories/links

I have this problem with tab-completion in terminal in both archlinux and ubuntu: I have a link which links to a directory named "something" in my home directory. Now when I open a terminal and want ...
9
votes
8answers
5k views

Pushing my PS1 prompt over ssh

I use a specific PS1 prompt that I like. I share a few logins with other other people on a few different servers. I was wondering if there was a way to specify in my local bash profile a remote prompt ...
4
votes
2answers
15k views

What are the methods available to get the CPU usage in Linux Command line? [closed]

We know that top is a command to get the CPU usage in Linux and other ways include cat /proc/stat which is used by top. What are other methods to get the CPU usage in the Linux command line? Use ...
13
votes
5answers
4k views

Steganography software

Do you know some good (better if FOSS and cross-platform) steganography software that runs on GNU/Linux? The features I'm searching are: steganography software (better if FOSS and cross-platform) ...
12
votes
2answers
2k views

SandForce SSD encryption - security and support

I'm currently thinking about buying a ThinkPad X201 and equip it with a SSD drive. Now, to protect my data I always used Linux with LUKS full disk encryption on my laptops. However, as stated in ...
4
votes
4answers
6k views

temporarily disable touchpad and keyboad, i.e. babyproofing my linux laptop

Following up with this other question, how can I temporarily disable the touchpad (both movements and buttons) as well as the keyboard in Linux Ubuntu Hardy? I mean, there is a menu for disabling the ...
23
votes
2answers
8k views

Linux: Is there something similar to “top” for I/O?

My disk often is utilized, but top (and htop, a custom replacement) show nothing suspicious. Is there a way to sort processes by I/O (more specific: disk) utilization? EDIT Found out using iotop ...
11
votes
4answers
669 views

Linux file system

What are the conventions for file locations in Linux? So far I've managed to deduce: /proc (references to running processes) /dev (references to all hardware) /etc (configuration files) /home ...
10
votes
5answers
3k views

Is it better to dual-boot or run a VM?

I want to run Windows Vista 64bit (Eventually Windows 7) and Ubuntu on the same machine. I want to play games and do graphic design in Windows. I want to write code, surf the internet, check email, ...
7
votes
2answers
2k views

Script or launcher to setup multible terminal tabs in different locations

I have already studied this some time ago, but did not find any solution that would open terminal tabs, run some commands and then allow me to continue using those terminal tabs. All the ways I found ...
6
votes
3answers
3k views

Watch Filesystem in Real Time on OS X and Ubuntu

I'm looking for a CLI tool which will watch a directory and spit out the names of files that change in real time. some_watch_command /path/to/some/folder | xargs some_callback I'm aware of inotify ...
5
votes
2answers
2k views

OS X keeps “losing” my Linux Samba shares

I have a Linux server (Ubuntu 8.10) and a Macbook (10.5.7). The Linux server has some Samba shares which I mount on the Macbook. They are set to mount on boot using the "Open Applications at Startup" ...
3
votes
2answers
6k views

What are the nuisances of creating a bootable Windows 7 USB drive from linux with ms-sys or dd?

I have been reading some web pages and posts (here and in other forums) about how to create a Windows 7 installation USB media from linux (to install Windows 7) I asked in TechNet about this, and I ...
3
votes
4answers
32k views

Setting permissions for specific user and groups in Linux

How can I grant permission for files to a specific user or a specific group? We have three groups: "g12" ("u1" and "u2), "g34" and "g56". g12 - should only read the file. g34 - should write and ...
3
votes
8answers
1k views

What do I need to run a Linux Home Server

What hardware and software will I require to run a Linux Home Server?
2
votes
1answer
3k views

Forcing all outgoing connections through proxies

How can I do this in Linux? It'd be nice if there was a way to transparently force connections through proxies rather than configure them individually for each program.
10
votes
4answers
9k views

Releasing swap space

At times the kernel seems to be intent on keeping e.g. firefox in swap, even though there is enough physical memory available and I'm using firefox: robert@rm:~> free -m total ...
7
votes
5answers
18k views

How to reset folder permissions to their default in Ubuntu?

I recently typed the command sudo chmod 777 -R / after that some things like sudo -i are not working normally. So I am wondering if there is any way I could reset the folder permissions to their ...
7
votes
2answers
3k views

How to make ssh log in as the right user?

I use ssh on a variety of machines, mainly linux. Accounts on these machines vary in naming scheme: if my name is First Last, then I have accounts: first, flast, last_f, lastf, and sometimes I need to ...