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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PPTP: Linux clients unreachable

I have setup a PPTP server on a CentOS 6 box. Several clients (Windows and Linux) connect to this server. All clients use the same subnet. All clients (Win or Lin) can surf the Internet using the VPN ...
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495 views

Merge two Foldes (Backups from my Files) on Windows 7 or Ubuntu 12.04

I have yearly backups of all my files on the harddrive. The problem is that the Backup from 2007 contains files which don't exist in 2008. And I need both Versions of the Files, when they are ...
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2answers
269 views

What would I need to do to clone a Linux install to another machine?

Basically, I want to make an image of one Linux install I have, and distribute it over similar (if not identical) spec machines on a network. I know it is possible, however am unsure of what needs to ...
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How to terminate a program on a BSP when default kill (-9/all) options do not work

I have written a program for basic file reading/writing. When I added lseek, a function new to me it did not terminate. I have tried to use the following commands to get it to do so: ctrl kill PID ...
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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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139 views

Weird ssh behavior when listing folder

I was trying to get a file from my home PC using SSH, from my Android phone - connection went fine, but directory listing hanged. I've tried then using a PC with ubuntu, in nautilus - hang again when ...
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270 views

installing MySQL 64 bit community edition on linux production server from an newbie

Currently i am having command sudo apt-get install libmysqlclient-dev mysql-server I don't know whether it's going to install 32 bit or 64 bit mysql. Currently i am looking command for installing ...
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2answers
831 views

Tool for diffing large files

When I use "diff" to find the difference between two large data files, diff A.txt B.txt > dif.info it is output: diff:memory exhausted or add the argument "-H" diff -H A.txt B.txt > ...
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946 views

PuTTY + Ubuntu 12.10: why do I have no colors unless I use screen?

I am accessing a new Ubuntu 12.10 installation via PuTTY. I am attempting to get my shell to display in color. Color works fine in interactive applications like vim, but I want to get color in e.g. my ...
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1answer
1k views

How To Investigate/Restore MySQL Permissions? MySQL ERROR 1045 (28000): Access denied for user

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) Debian. mysqld is listening on 3306 supposedly Telnet to 3306 works Also tried binding it specifically yo ...
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513 views

Linux history old commands

When I enter history | more in Ubuntu terminal I see a list of 1000 - 2000 old commands. How do I view even older history i.e., before 2000?
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1answer
182 views

terminal tools and logs for debugging TCP issues

I have a server which I am testing for functionality (not load, not stress) with tsung. 50 users / second, 100 total users. Judging from tsung (tsung is the testing framework) graphs, there TCP ...
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84 views

to measure throughput of testing device connect to server via AP

Description of project-> I have a test tool to which DUT connects. The test tool has an access point in it and once DUT get connected to it via mac address we check RSSI and some other features ...
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2answers
75 views

Create zipfile from changed files in 2 directories

What I'm trying to do is create a zipfile (or some different archive) which contains all the changed files from 2 provided directories. The path of the files should be persisted in the archive, so the ...
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2answers
2k views

“Bake” an SVG image into a PNG at a given resolution?

I'm on Linux and I'd like to take an SVG file and bake it into a PNG file at a given resolution (scaling). Is there a way to do this quickly and effectively from the command line? I'm looking for ...
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1answer
201 views

First connection to debian server slow

I have a running Debian web server with ispconfig. The problem is that whenever I make a first connection it takes about 1-2 seconds to connect, after this 1st connection everything runs smoothly. I ...
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3answers
462 views

make command for installing in linux give it a directory

I want to install bedtools (i.e., a c++ source code for manipulating certain types of files). In order to install it the installation instructions says to download the tar file, untar the file, go to ...
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2answers
2k views

How to create a RAM disk - Fedora 17

How do I create a true RAM disk? I don't want a virtual file system with loop devices, I would like a mountable filesystem that is stored completely in RAM. I am using Fedora 17, linux ...
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1answer
2k views

Installing Ubuntu to dual-boot from mSATA

I'm about to recieve a 2012 Dell XPS 15 with 128GB mSATA and 1TB 5400rpm HDD, it should come with Windows 7 Pro 64-bit. I understand that Smart Response Technology (SRT) in the Intel Rapid Storage ...
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1answer
235 views

Windows 7/8 can't connect to an N Router

I have a router running OpenWRT backfire, with N and A/B/G being broadcast. A linux laptop, and a Mac laptop can see the N network and connect to it (or at least they could last weekend). But there is ...
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1answer
172 views

Archiso build failing due to dbus and dbus-core conflict

I am trying to build an ISO with archiso (releng), and even after running pacman -R dbus and pacman -Syu the build fails with the following error: looking for inter-conflicts... :: dbus and ...
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2answers
419 views

Bash autocomplete for different directories

I've played with bash autocomplete now for a while, but couldn't find a solution for my problem. I have a project directory with subfolders like this: projects/ruby/project1 projects/ruby/project2 ...
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1answer
316 views

wget timestamp alternatives

I have a script that works in a loop and checks for mysqlbackup copies on another server. couple of times a day wget downloads the file even though no change has been made. what I've tried is using ...
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4answers
1k views

How can I use SSH to tunnel to a port that's open on the machine I have access to but not open to the outside world?

I currently use SSH to tunnel my internet connection, using ssh -p <port> -ND <local port> <user>@<ip address>, and this works great. However, I'd like to bind a local port to ...
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312 views

USB Mass storage driver as CDROM in Windows & MAC

I am in the process of enumerating a Hybrid ISO image which will show up as CDROM in Windows & MAC and encountered with the following problem. Hybrid ISO image is created with the following ...
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1answer
165 views

How to enable the bash history only caching commands that are acutally in path?

Having a bash history enabled is a security risk, because when you accientally enter your password into the bash the password gets stored in the bash history. To prevent this a good solution would be ...
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1answer
924 views

NFS: Network disconnect causes Gnome Nautilus to hang / Jumping progress bars

I mount NFSv4 export via /etc/fstab and mount and use the shared folder in nautilus. There are two issues: When I copy a large file (around 4 GB) to the NFS server, the progress bar rapidly goes to ...
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Current sound configuration (integrated Realtek ALC662) on Ubuntu 12.04 plays everything as mono. How to fix it?

All music files play as mono on my Ubuntu 12.04 installation.System soundcard (integrated): nVidia MCP61 High Definition Audio (Realtek ALC662). Did anyone have the same problem? What's the solution? ...
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1answer
271 views

Test USB-connected SD card reader

I'm running a Linux system, so I'm asking a solution that can run on Linux, better if via terminal on a command line. I have a laptop with an integrated SD card reader, which is connected to ...
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2answers
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logging RAM memory high-water mark of a Linux process

I would like to log the RAM memory high-water mark of a Linux process (kernel 3.2.0-36) by the time the process finishes. I am calling the process inside a Perl script. Something like: my $cmd = ...
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1answer
422 views

How to create drive symlink with colon for NTFS-3G symlinks in “.NTFS-3G” folder

The official documentation of NTFS-3G states that you need to create a mapping for drive-spanning NTFS symlinks because it obviously can't map Windows drives to Linux mount points: Another option ...
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265 views

Cronjob does not work

I tried to set up a cronjob on my server. Actually this command should execute a java programm every hour. But somehow this didn't worked. I googled and tried to set up a test-script that should run ...
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843 views

Cannot execute java command on Ubuntu

I am using Ubuntu 12.04, installed JDK and interestingly have the following error. Why do I have this error though java file exist in there? appuser@securexmlgw-db:~/Downloads/jdk1.7.0_04/bin$ ls ...
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1answer
713 views

Incremental/Differential backup of VMWare Workstation VM?

I need to take an incremental or differential backup of a Linux guest OS running inside VMWare workstation. How do I achieve that? I can take a full backup when the virtual machine is down, but I ...
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1answer
116 views

Why does newline come before space in the output of hexdump?

Using hexdump, printing these characters in the "canonical" format gives the output that I expect, while the default format throws me off. $ echo " " |hexdump # Reversed? 0000000 ...
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371 views

Why does redirecting “sudo echo” stdout to a file not give root ownership?

I'm pretty new to using Linux heavily, and I'm trying to learn more about file ownership and permissions. One thing that I stumbled on just now was exactly what the title says, running: ...
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1answer
598 views

How do I change the default python version in Red Hat 6?

I've recently installed Enthought Python Distribution, after which it gave me the message: As the last step, you should edit your .bashrc or prepend the EPD install path: ...
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2answers
1k views

How to list files owned by me for quota checking?

On Linux (RHEL 6) what is the best way to list all the files and sizes that are counting against my quota on a given filesystem? We have a projects directory and everything I am currently doing is ...
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1answer
153 views

What is the difference between :::: and 0.0.0.0 from the netstat -an output?

I just want to understand the difference between :::: and 0.0.0.0. I believe both are same which let connection from outside if any processor is listening to that port. udp 0 0 ...
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1answer
57 views

Excute for loop in subfolder

I have this command : for i in $(svn st | grep \! | awk '{print $2}'); do svn delete $i; done I would like to execute it to a subfolder without making a cd command. Is it possible ? Thanks !
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1answer
532 views

rsyslogd: how to send messages to user pseudo console

I set up my rsyslogd.conf setting so: auth,authpriv.* username but username does not get the messages (in (all) his pseudo-terminals i.e Gnome terminals). My questions related to ...
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3answers
5k views

force wget timeout

How can i force wget to stop after X seconds? I have a script that downloads images, from time to time it gets stuck and refuses to "timeout" what i've tried: --tries=3 --connect-timeout=30 from ...
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35 views

create ~ dir in another dir mistakenly, can not delete it

I mistakenly create ~ in ~/source sx@ubuntu:~/source$ pwd /home/sx/source sx@ubuntu:~/source$ ll total 440 drwxr-xr-x 3 sx sx 4096 2012-12-06 02:25 ~/ drwxr-xr-x 4 sx sx 4096 2012-12-06 02:25 ...
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1answer
61 views

Fedora lower vesion not allowing php upgrade

I have php 5.2.9 installed on fedora6. Now I want to upgrade php on it's latest version. But lower version of fedora not allowing I tried with yum and rpm commands. Please help me how can I upgrade ...
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1answer
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How can i install WLAN drivers on Fedora 17 without any internet access?

I need to install WLAN drivers for my "Dell Wireless 1397 WLAN Mini-Card" on my PC without using LAN because my LAN slot broke. I am a Linux NOOB btw >_<
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300 views

How to automatically take daily HDD backup?

I think my HDD might have crashed. I don't want to lose data if this happens again. I have dual boot Windows/Ubuntu system. What is the best way to backup data and other software settings in Ubuntu? I ...
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1answer
4k views

jstack command not found on centos

I installed JDK by downloading the RPM from oracle and installed it using yum. But the jstack command is not recognized. I'm using CentOS 6.3 How can I make it work?
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2answers
485 views

Ubuntu Connect Button Disabled, cannot connect

I'm trying to connect to my school network from Ubuntu 12. The network is WPA encrypted and I can connect just fine if the network manager establishes a connection automatically. However, when I get ...
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1answer
63 views

Boot loader of linux

I am in need of help. Recently i studied about the booting sequence of Linux OS and one of my colleague mentioned that it has 2 bootloaders. Stage 1 bootloader and Stage 2 Bootloader. He also ...
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1answer
113 views

Testing for SSH access

I've changed my household router and broadband recently (to BT Infinity), and I've noticed that my SSH server has become fairly unreliable. Of course, I've set SSH to be forwarded to the correct host ...