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.

learn more… | top users | synonyms

0
votes
2answers
5k views

Firefox displays garbage characters in lieu of web page

On this web page http://taj.chass.ncsu.edu/Hindi.Less.05/dialog_script.html, firefox and opera running on windows and linux display the source html interspersed with garbage characters (for me, they ...
74
votes
11answers
133k views

How to wipe free disk space in Linux?

When a file is deleted, its contents may still be left in the filesystem, unless explicitly overwritten with something else. The wipe command can securely erase files, but does not seem to allow ...
79
votes
11answers
52k views

How to reliably keep an SSH tunnel open?

I use an SSH tunnel from work to go around various idotic firewalls (it's ok with my boss :)). The problem is, after a while the ssh connection usually hangs, and the tunnel is broken. If I could at ...
76
votes
2answers
85k views

How to convert .ppk key to OpenSSH key under Linux?

I know that is possible to convert .ppk under puttygen in Windows, but how to do that on Linux? Is this possible ?
31
votes
5answers
16k views

How to use different network interfaces for different processes?

I have two network interfaces on a Linux PC, and I need to manually set the interface that a given process will use. The program (Twinkle softphone) does not have a similar option, so I believe that ...
48
votes
4answers
55k views

How to specify level of compression when using tar -zcvf?

I gzip directories very often at work. What I normally do is tar -zcvf file.tar.gz /path/to/directory Is there a way to specify the compression level here? I want to use the best compression ...
61
votes
8answers
33k 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 ...
76
votes
3answers
179k views

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

Is there a way to run Linux Google Chrome with Java support?
27
votes
5answers
89k views

How to reinstall GRUB2 EFI?

After successfully updating my bios, something went wrong and I ended up with a blinking cursor on the top left corner of a black screen. No errors, no nothing. The bios now only listed a SATA: ...
79
votes
2answers
17k views

How to append to a file as sudo? [duplicate]

Possible Duplicate: sudo unable to write to /etc/profile I want to do: echo "something" >> /etc/config_file But, since only the root user has write permission to this file, I can't ...
50
votes
12answers
56k 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 ...
38
votes
3answers
78k 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 ...
27
votes
9answers
66k 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.
17
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 ...
45
votes
7answers
39k 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.
26
votes
3answers
20k views

How do I get out my embedded Windows 8 key from a Linux environment?

I have seen other SuperUser questions on this topic: How to find Windows 8 product key? | How to find Windows 8 OEM product key? However, all of the answers assume you have Windows 8 running. I've ...
42
votes
6answers
58k 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 )
28
votes
6answers
19k 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 ...
23
votes
4answers
24k 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 ...
14
votes
3answers
13k 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 ...
44
votes
11answers
10k 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
39k views

What is the meaning of “chmod 666”?

I am using Linux. What is the meaning of chmod 666?
27
votes
8answers
24k 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 ...
7
votes
2answers
13k views

Using Samba to share a folder from a Linux guest with a Windows host in VirtualBox

I would like to share a folder from a Linux Guest with a Windows host (with read and write access if possible) in VirtualBox. I read in these two links: here and here that it's possible to do this ...
35
votes
3answers
2k views

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

What does the rc mean?
19
votes
13answers
4k 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 ...
18
votes
1answer
27k 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 ...
11
votes
3answers
17k 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
24k 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 ...
19
votes
8answers
26k views

Simple mdadm RAID 1 not activating spare

I had created two 2TB HDD partitions (/dev/sdb1 and /dev/sdc1) in a RAID 1 array called /dev/md0 using mdadm on Ubuntu 12.04 LTS Precise Pangolin. The command sudo mdadm --detail /dev/md0 used to ...
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
10k 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
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 ...
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 ...
10
votes
5answers
9k views

What Linux fits on a floppy disk?

Which Linux distributions fit on a 1.44 MB bootable floppy disk? Where can the .img image files be downloaded?
4
votes
2answers
16k 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 ...
9
votes
4answers
2k views

X equivalent of 'screen' utility

Under unix/linux, there is this extremely useful program screen: it's for bash, text-only, and I can detach a session, log out (the session is still running though), log in later (even from a ...
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
9k 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
3answers
4k views

Why use multiple partitions on Linux installations?

Does it really perform better than a single partitioned installation? Why?