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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Stuck at GRUB prompt after booting, how can I restore normal booting?

My machine was dual-booting with Windows XP and Fedora, then I tried to install Arch. While installation power went off. After that, booting always results in the GRUB prompt. Even when I instruct my ...
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Digital Function Keys is disabled after resume on Debian

I have a Lenovo X1 Carbon and I have Debian testing on it. Everything seems to work now except that the touch enabled digital display strip that is just above the keyboard ( not sure what it is ...
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1answer
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CentOS - Java in Browser

My output of java -version [root@CentOS ~]# java -version java version "1.6.0_30" OpenJDK Runtime Environment (IcedTea6 1.13.3) (rhel-5.1.13.3.el6_5-i386) OpenJDK Client VM (build 23.25-b01, mixed ...
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How to find out if a linux machine was connected to a certain wireless access point ?(wireless connection history)

I am trying to find out a piece of log that states that a machine was connected to a certain wireless access point sometime in the past. Where exactly does linux store this information.(some file in ...
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1answer
16 views

show message when devices connected wireless router

I'm guessing the only way "Universally" to show a message like "Welcome to my WiFi connection" is through a html landing page( redirection). I would say SMB but I believe Windows 8 doesn't allow you ...
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Why do I need to “hdparm -r” in order to mount a Sony camcorder read/write and why is it dangerous?

When I plug my Sony camcorder into my Linux systems, the file system gets mounted read-only. I cannot simply mount it read-write, I first have to use "hdparm -r0" to make the "device" read-write. Why ...
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29 views

Linux Partition with SSD and HDD

I'm currently setting up my server and I don't get how to choose Disk 1 and Disk 2 for the partition. vg0 should be the HDD and vg1 the ssd. Maybe you can help me how to set up such in this syntax. ...
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linux - centos won't boot after rebuilding raid

I have a dedicated server with OVH. Yesterday they had to replace one of the HDD because it was about to fail. After replacing the disk, we had to rebuild the RAID and now the server won't boot ...
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1answer
23 views

Bind bash script to keypress

How do I map a keypress on a keyboard to a bash script? For example, when I press the "Esc" key, the script is run. OS: XFCE Spin Fedora 19 ---- EDIT ---- I need to set this via the console. This ...
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Slow hotkey response in GNOME 3.12

I run Arch, and I recently grabbed the 3.12 upgrade for GNOME. I've had F12 bound to terminator for a while, since I often have to summon new terminals. Ever since the upgrade, using a hotkey for a ...
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1answer
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Domain [ Understanding ] issue when creating a Linux email server

Ok, here goes my paradoxical question. For about 1 year into my hobby-ish career, I used to buy my domains and a hosting package from Reseller Club. I purchased their " shared hosting " plan and ...
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redirecting output in crontab

I have a shell script to monitor table stats and java apps. It works fine when I run manually. But if I put it in the crontab it will get stuck if I don't redirect it's output with export display ...
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1answer
5 views

Cannot follow Shortcuts in CIFS-mounted windows shares

I have a windows share: \\MYSERVER\SHARE\ MyFolder MyShortcut\ SubFolder1 Subfolder2 Using a windows box, I ...
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5 views

How can I auto mount a CD or DVD to the same location/path every time?

I am running Linux Mint 13 and I am enjoying the convenience of having a CD or DVD automatically mounted after I insert it (to some mysterious place). I have converted this machine to a headless ...
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Preventing unused spare hdd from spinning up during suspend and shutdown

I recently replaced my sata hdd with an ssd, and keeping the hdd in as a spare. It's not used, not event mounted to filesystem. Yet, when suspending or shutting down the system, it quickly spins up, ...
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7 views

error installing MySQL-python

I'm starting to learn python. When I try to install MySQL-python with yum from yum install MySQL-python.x86_64 I get this error Loaded plugins: katello, product-id, security, subscription-manager ...
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Why does multicast streaming only work with 224.0.0.0/4 routed to network card/NIC in Linux?

a project of mine involves multicast streaming of DBV-S2 TV channels by using a networked SAT tuner. As there are no IGMP-capable network switches, the network is quite stressed and so I set up a ...
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How do I deploy IPv6 within a LAN using a Debian based router?

My ISP started using DHCPv6, which means with this /etc/network/interfaces... auto lo eth0 eth1 iface lo inet loopback allow-hotplug eth0 iface eth0 inet static address 192.168.0.1 netmask ...
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26 views

Recommendation for a linux virtualization homemade open-source server build [on hold]

I'm looking to built a central virtual server with XenServer for a couple of Debian and Ubuntu server and I was wondering what you guys think of it. What is your recommendation, criticism, et cetera. ...
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5 views

pcmanfm display desktop in a ackward fashion when using side-by-side multihead/multiple monitors

I have my laptop, and I pluged an LCD monitor to it, followed a couple of tutorials for my GNU/Linux distro on how to do multiheading properly and everything is good. BUT, PCManFM. PCManFM provides ...
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2answers
34 views

How to kill all processes returned by pgrep

I need to kill a few Python processes. I can get a list of the process numbers using pgrep python, but how can I kill them all at once instead of killing one by one? I'm looking for something like: ...
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1answer
37 views

Can't `ls` Long File Name [duplicate]

Using CentOS 6.5, there's a file in my directory whose name is 161 characters. This directory is shared between the host VM (Windows) and Guest VM (Vagrant). I can't access it with ls: > ls ...
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1answer
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pam_tally2 does not show address of the failing user

See this output below: # pam_tally2 -u Login Failures Latest failure From root 1 04/16/14 16:44:16 10.4.1.189 greg 2 04/16/14 16:35:57 unknown ...
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32 views

Access/Control Desktop using Android [on hold]

I want to control/access my desktop (Windows/linux/unix) from android device. I need some guidance to start this android development.If any one has any idea regarding same that is any sdk i can ...
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bindfs doesn't work from fstab on openSuse 13.1

everybody. I'm trying to use bindfs to mount a partition with access for the two users I have in my PC. I installed bindfs from repository: bindfs 1.12.2 I created a mountpoint called ...
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1answer
19 views

Force all traffic through VPN

I am using PfSense as a firewall, with its VPN functionality. The client I use is Shrew Soft VPN client. As it is a split tunnel, is there a way I can force all traffic through the VPN connection, ...
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2answers
24 views

extract archived .bz2 files inside a .tar archive with a single command

i need to decompress .bz2 files inside a .tar archive (two step decompression) For example: requested_files_1.tar has multiple .bz2 files inside. How can I extract them with a single ...
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15 views

MDADM RAID 5 disk missing after reboot

I have a server with 6 disks (4x2TB + 2x4TB). I put the 2TB disks in 2 RAID 0 and the resulting 2 4TB RAIDs with the 2 4TB disks in a RAID 5 array. The RAID works fine until I reboot the server. After ...
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2answers
28 views

Recursive, Non-Overwriting Copy

I've got a directory that contains a bunch of other folders containing CoffeeScript/ JavaScript files. I'm able to compile the CoffeeScript files into a new folder with the same folder structure ...
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1answer
15 views

vi Error | Out of memory saving lines for undo - try using ed

While executing the following command on a large file: vi largeFile.log I get the following error: Out of memory saving lines for undo - try using ed My environment is: AIX6 I cannot add any ...
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1answer
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How do you run kakorokuRecorder on Wine?

I'm trying to run kakorokuRecorder on Wine but I get this when I run it. System.ArgumentException: A null reference or invalid value was found [GDI+ status: InvalidParameter] at ...
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2answers
19 views

How to stop shell script if curl failed

I have script that used curl when i pass wrong parameters to script curl failed but script continue executing. I have tried use curl -f/--fail parameter but problem does not solved. What is the best ...
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46 views

how to use curl to verify if a site's certificate has been revoked?

To check if the certificate for google.com has been revoked, I tried the following command: curl https://www.google.com --cacert GeoTrust_Global_CA.pem --crlfile gtglobal.pem -v , but I got the ...
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Is it possible to spawn any kind of terminal on dedicated lan card before entering LVM volume passphrase?

I got IBM x3500 m2 server running Ubuntu server on encrypted LVM volume. This machine has one slower LAN card for service purposes. Is there any way to spawn some kind of console on it BEFORE ...
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1answer
52 views

Which is the most CPU-efficient virtualization solution on Linux? [on hold]

I am interested in the following problem: When running CPU-intensive tasks inside a virtual machine, there is a certain CPU overhead, i.e. the same task takes a slightly longer time to run inside a ...
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1answer
7 views

Error on unchanged system: hub 4-0:1.0: unable to enumerate USB device on port 1

I have a laptop running debian wheezy: $ uname -a Linux *pcname* 3.2.0-4-686-pae #1 SMP Debian 3.2.54-2 i686 GNU/Linux I recently made a debian boot usb like so: sudo dd ...
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1answer
29 views

Invert colors by *value*

How do I invert screen colors by value? The most common way to invert colors is to use RGB-negation. Unfortunately, it's not very beautiful: blue becomes yellow, green becomes magenta, etc. What I ...
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1answer
38 views

Is there a scenario where rm -rf -no-preserve-root is needed?

I've seen some questions on here where people accidentally do rm -rf --no-preserve-root or rm -rf *, wiping out most or all of their file system before they can react. Is there ever a reason to use ...
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2answers
14 views

Use ffmpeg to cut mkv file

I tried to cut MKV video file by following command in Linux mint 16. ffmpeg -i input.mkv -vcodec copy -acodec copy -ss 00:39:05 -t 00:03:03 out.mkv output: ffmpeg version ...
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1answer
14 views

How can I set default permission with ACL in linux?

I have two groups group1 and group2. I need group1 users to be able to read-write (rwx) files owned by users in group2, but users in group2 cannot write to (r-x) files from group1. All users in a ...
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1answer
14 views

how to resolve yum replace php-common --replace-with=php55w-common error?

how to resolve yum replace php-common --replace-with=php55w-common error? on CentOS 6.5 root@server [~]# yum replace php-common --replace-with=php55w-common Loaded plugins: fastestmirror, replace, ...
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1answer
35 views

Piping tail -f into awk

Greeting, I am trying to pipe tail -f into awk to monitor a logfile in realtime, but according to examples, there should be not problem but I can't get it to work. here is the command I'm running ...
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2answers
23 views

Bash : conditionally moving nested duplicate directories

Assume I have a directory named "foo" that contains several directories: foo/bar/bar/(files) foo/bat/bat/(files) foo/baz/qux/(files) Is there a way to conditionally move the 'deepest' directory up ...
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1answer
21 views

Why shadow password hashed with sha512 contains 99 instead of 129 characters?

My Linux is configured to use sha512. Yet, the /etc/shadow file contains hashed password with 99 characters only. Why 99 and not 129 (64*2+1)? Note that I had changed password after making sure the ...
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1answer
50 views

What does Shift+Enter do in a terminal, and can I disable it in Vim?

Everyone once in a while while in insert mode in Vim, I'd be happily typing along, when all of a sudden I'd be thrown out of insert mode and my last edit undone after hitting a certain key ...
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1answer
23 views

How do I set a RAID array as a /home mount point on Linux?

I need to create a file server using Ubuntu Server 13.10 with the following specifications: 1 80Gb HDD: grub boot manager System files apache server files 2 identical 1000GB HDDs: RAID 1 array ...
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2answers
19 views

How can I download a subpart of file in linux/windows?

I want to download a huge file (dataset) which is about 200GB but do not have enough disk space in my internet-connected PC. I want to download a piece of the file (e.g. 30GB chunks) in each run and ...
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14 views

stdbuf not working while unbuffer does

I am trying to apply timestamps to stdout of a process. For the proper timestamps to be applied, I attempt to unbuffer stdout of the process. This works with unbuffer but not with stdbuf as I would ...
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14 views

SD card reader not working on Debian

I'm using Debian for about 6 months and my card reader never worked. I tried several solutions I found online with no luck. How can I make it work? Here's the output generated by lspci 00:00.0 Host ...
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Unbuffer swallows the exit status of killed process

The expect "unbuffer" command seems to swallow the exit status of its child if the process is killed. Is there something that can be done to stop this behavior? It does not swallow the exit status if ...