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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Sound from external DAC not detected; can't unmute devices in pavucontrol

Recently I installed Linux Mint 17.1 KDE on a brand new computer. So far, only this problem. Using Audacity, I'm trying to capture audio streams from an external DAC-tuner connected by optical cable ...
7
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1answer
2k views

Verizon USB551L 4G Stick on Linux

I have been trying to get a Verizon USB551L 4G USB Stick working on Debian Linux. I have been able to get it to connect, but it always disconnects after 10 secs to 2.5 minutes, then it cannot connect ...
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1answer
11 views

KDE launcher opens .desktop files in kate

Opening programs via the 'Application Launcher' menu, then selecting the program works. Using the launcher generated on the panel, eg by right-clicking on an open program, then selecting 'Show A ...
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2answers
5k views

How to make a desktop icon on centos 7?

I am new to Linux and this may sound very dumb but I need to make a desktop icon on centos 7 but I don't know how to do it. I tried googling but I can't even find Launcher. Need help
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1answer
5k views

Default permissions with setfacl

Just started using setfacl to assign permissions for a specific group to /var/www/html (CentOS 5). Files in this directory are 640, root:apache. However, I've noticed that after doing something ...
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1answer
840 views

How to connect HDMI camera to Linux?

In fedora or centos linux is it possible to connect HDMI camera to HDMI capture device ( http://www.blackmagic-design.com/products/intensity/ ). And get the video for playback from Linux? Or still ...
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votes
1answer
10 views

rsync multiple files with colons in their names

rsync interprets colons in file names as indicators that preceding is a remote machine name. When you try to rsync a file that has a colon in it's name, rsync typically gets confused, producing errors ...
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votes
8answers
677 views

Remove linux file named with set of shell responsive characters

I've created a file named \;:$"\' to test a software of mine. I ended up with an error, because I cannot delete the file property. I'm trying to find a precise character combination to remove it via ...
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0answers
10 views

Can't access rails server on VM form host

I have a rails server on virtual machine and I need to access localhost from host. I've tried both NAT (by port forwarding - port 80 and 3000 on the guest side) and bridged adapter but nothing seems ...
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0answers
6 views

Pipe remote jpg webcam image to ffmpeg as video

I have a cheap ip webcam. All it provides is a single http url to a static jpg file. Such as http:///image.jpg. Repeatedly requesting the same url will provide subsequent frames from the ip camera. ...
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0answers
19 views

What do the timestamps produced by the 'stat' command in Linux actually mean?

I have looked around for an answer but I haven't found anything that's really a concrete definition. The stat command for one of my files produces this: Access: 2015-05-21 22:30:27.731032591 +0100 ...
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2answers
46 views

How would you allow non-privileged users to excute files that have 774 permissions?

How would you allow non-privileged users to execute files that have 774 permissions?
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1answer
295 views

Linux IrDA printing

I have a USB IrDA that I got working with my IrDA printer (SiPiX compact printer A6) on the Windows side, using default 4000000 speed and 1.0ms turn-around time (in the driver config). The USB IrDA ...
1
vote
1answer
83 views

How can I recursively identify non-searchable PDFs and copy them to a folder?

Further to an earlier post which provided a script solution: From my question it may be possible to tell that I am a computer user and have no programming knowledge. I have hundreds of searchable ...
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0answers
11 views

How to change Windows permissions for Linux NAS?

I have just finished setting up my new NAS (Western Digital My Cloud EX2) and I'm having trouble with permissions, I can read and write from the internal drives fine, but I have an external usb HDD ...
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5answers
6k views

How to find out from which folder a process is running?

In *nix you can use ps to see which process are running. But if an executable has multiple homonimous files in a device, we can't figure where it was invoked from. This is slightly different from my ...
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0answers
31 views

Is there any Linux-only software that a budding programmer should be aware of? [on hold]

Soon, I will finish highschool, and move to a bigger city to attend college, so I will be buying a laptop PC to suit my needs. At first, I was looking for a laptop that would run Linux well ...
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0answers
10 views

Virtualbox Linux guest to inherit host user db and/or LDAP

Is there a way for a Linux guest to inherit the user db/definition of the host and/or the LDAP user of the host? By user db, I meant the users' names and group membership as visible on the host. ...
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4answers
32 views

Copy paste a multiline command into command line

I'm writing a doc about installation of my soft and I have to write things like Please do the following: sudo apt-get update sudo apt-get install python-dev cython portaudio19-dev The ...
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1answer
27 views

How can I remove all the customizations imposed by Linux Mint 17.1 on firefox?

I have found two solutions for the same: Downloading and installing .tar.bz2 package (firefox) from mozilla.org (Problem:Package provided is portable and is not installable). Installing firefox from ...
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3answers
28 views

Use dd to backup device over the network

I have a Raspberry Pi connected to the network along with a USB stick. Is it possible to use the dd command on my Raspberry Pi and automatically upload the iso to my Mac? What I mean is on my pi ...
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votes
1answer
1k views

Enable USB smartcard inside VMware

I am running Windows 7 inside VMWare Player on a Linux host. I want to use a USB smart card reader but it is not working. The client app reports: "No Card Detected", but it appears to recognize that ...
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3answers
48k views

How do I create a 1GB random file in Linux?

I am using the bash shell and would like to pipe the out of the command openssl rand -base64 1000 to the command dd such as dd if={output of openssl} of="sample.txt bs=1G count=1`. I think I can use ...
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1answer
686 views

Is it possible to power off a PCIe video card/slot? (eg. hot-plug)

I'm looking at building a system that supports VT-d so I can pass through a high powered loud video card to a Xen/KVM/whatever VM (host will be Linux based). However, when I'm not using the VM I want ...
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0answers
16 views

Which configuration files affect the routing table of a Debian system

As far as I know basic network configuration goes into /etc/network/interfaces and the system generates the routing table from these information. I was also taught that in general ...
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1answer
2k views

Sound not working in VMware player

Guest operating system is Windows 7 and I have VMware player 6.0.1 installed. On it latest version of Mint Linux is run. The problem is Linux never gets sound. How do I fix this? The message "the ...
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10answers
34k views

Top causes of slow ssh logins

I'd love for one of you smart and helpful folks to post a list of common causes of delays during an ssh login. Specifically, there are 2 spots where I see a range from instantaneous to multi-second ...
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votes
1answer
8 views

Where is the 'comix' linux program library database stored?

I know it's not on ~/.confix/comix/preferences.pickle since i checked that file and it has no paths or the definitions of the comic books names and paths i input to my current library. I want to know ...
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0answers
20 views

Switch from linux user to administrator; how to setup and maintain identical installations

I recently installed Linux on my computer at university. I do have Linux on my laptop and in the near future on my workstation. Additionally some of my colleagues who are doing similar computations ...
14
votes
3answers
2k views

Command vs program?

I was looking up the difference between adduser and useradd, and an explanation is that useradd is a command while adduser is a perl script. I understand what a perl script is, but what I do not ...
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2answers
12 views

Checking for changes on Linux live OS's

I am a novice to the terminal of linux live OS's (eg Kali Linux). Please advise what 1) in built programs (e.g. Syslog...), 2) Commands in the Terminal (eg ls, ps, md5sum, ...) one can use for ...
97
votes
5answers
196k views

How to decompress a .bz2 file

I have a file as: filename.bz2, but I can't figure out how to decompress it. I tried several methods, none of them seems work. I have tried the command: tar xvjf filename.tar.bz2, but it didn't work ...
4
votes
1answer
2k views

'user is not in the sudoers file' but actually is

I have already read a lot of posts about enabling sudo-access for a specific user but those couldn't help me so far. The situation is: I'm running Debian Testing. On the system there are only two ...
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1answer
2k views

Invalid ACPI : Invalid PBLK length [5] during Debian boot

I installed Debian 5.03 Lenny successfully on my machine. I got this error during boot: ACPI : invalid PBLK length [5]. After that the Operating System boots properly and starts normally. What ...
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0answers
13 views

How to use Windows Libre office Macro In Linux environment

I have some macro which I have made in libre office by window 7 Now I want to run those macro in Linux system through some kind of command Now issue is that How can I save Macro in a single file..? ...
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votes
2answers
2k views

btrfs: HUGE metadata allocated

I have a 256GB SSD disk on which I converted my ext4 root FS to btrfs. I erased the ext4 backup subvolume, enabled compression and defragmented recursively to enable it on all files. btrfs fi df / ...
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0answers
7 views

Built in GRE keep-alive in Linux?

Is there a built-in gre keep-alive mechanism in Linux (iproute2 or such)? How do I enable that feature in such a case?
13
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3answers
1k views

Why would an incorrect password attempt take a lot longer to process than a correct one?

The most prominent place I've noticed this is when SSH-ing at work, but I feel like I've observed this behaviour elsewhere too. When I try to log into Linux servers from my Windows desktop at work, ...
0
votes
1answer
16 views

Install Linux based Operating System on Old Computer With Slow DVD Drive

I currently have an old IBM ThinkPad, this laptop has 512mb ram and a Pentium III processor. I have decided to install Linux onto it, and the specific version of Linux I am going with is lxle, ...
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2answers
43 views

Authentication with ssh and scp works but not WinSCP

I have a Ubuntu server with 3 user accounts (root, user1, user2). user1 has access via WinSCP, scp and ssh. No problems here. Then I've created another user2 but with this user I can't access the ...
0
votes
1answer
28 views

Install grub raid1 & lvm

I have installed an Ubuntu Linux on a machine where there was a RHEL (from Dell) At the end of the installation I got a message that GRUB2 could not be installed. So I booted into a Live Linux (from ...
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0answers
20 views

External USB disks and logical sector size

I have a WD Green 3.0TB in an external USB enclosure. I wanted to replace the disk with a Green 6.0TB. The USB enclosure is usually connected to a device that only understands FAT32 and MBR, so ...
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vote
1answer
13 views

Trouble negotiating rsync protocol versions

I am trying to rsync between a Linux box and a MacOS box. The MacOS (yosemite) seems to come with an old version of rsync so I've updated that using homebrew. OK, I seem to have perfectly matching ...
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0answers
13 views

DDRescue locks system up on disk clone

I have ddrescue running on the latest version of Fedora trying to clone a dying IDE disk. When I run ddrescue --no-split /dev/sdb imagefile logfile the copy will happen then the entire system will ...
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votes
2answers
37 views

Why must I use sudo for ssh public key authentication to work?

I cannot ssh from my computer (OS X) to my raspberry pi (ubuntu mate), unless I use sudo. I am using a public/private keypair to authenticate. The appropriate public key is added to the ...
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votes
5answers
25k 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 ...
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1answer
21 views

GUI terminated with return code 4

i am getting the below error . Could you please help me resolve this Invocation target exception: Can't connect to X11 window server using 'dummy0:1.0' as the value of the DISPLAY variable; you ...
0
votes
1answer
20 views

Using nonstandard formats with a USB floppy drive?

I was given a USB floppy drive, and it works beautifully. Linux Mint detects it as a Mitsumi FDD 061M, although the case and packaging are no-brand. (Counterfeit?) It realiably reads and writes 1.44MB ...
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votes
2answers
37 views

SSH to access remote screen without X

I need to access a remote computer (which is attached to a screen), using SSH - the problem is that the programs I start via SSH need to be shown on the remote screen (tail, htop, slurm, ...) The ...
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votes
2answers
8k views

Why doesn't my cron.d per minute job run?

I have thrown a bunch of darts trying to get a python script of mine to execute every minute. So I thought I'd simplify it to just do the "simplest thing that could could possibly work" once per ...