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

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Telnet into a linux machine using an RJ45-RS232 cable

my linux machine doesn't have a RS232 port, only an RJ45. I also have my grandpa's old pentium machine running windows 95 that has an RS232 port. The only means of interfacing these two computers are ...
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2k views

Why does my linux box randomly reboot?

I recently had a raid5 array fail (two of four drives failed) on a headless machine I have sitting in a cupboard acting as a file server. I didn't have adequate monitoring in place, so missed the ...
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1answer
895 views

Need Tool to Extract ER Diagram fom PostgreSQL 9,1

Guys I need to compare 2 different databases running in PostgreSQL. I would like to use some tool to extract the diagram in a automatic way, Ive tried pgadmin3 and pgdesigner but they seem ...
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3answers
12k views

Installing Notepad++ via WINE on Ubuntu Linux

After moving to Linux, I miss having Notepad++ with me and I want to bring it along to my new environment. I have Wine installed and downloaded the npp.5.8.5.Installer.exe. I have no idea what ...
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1answer
563 views

Do I need to be worried about these SMART drive temperatures?

I have 5 hard drives in a machine sitting in a cupboard. /dev/sda is a 500GB Seagate drive, and is the boot disk. /dev/sd{b,c,d,e} are 2TB drives in a raid6 configuration. smartctl is showing ...
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1answer
3k views

how to install 'version.h' in ubuntu ?

Just now , I try to install the Jungo WinDriver in the Ubuntu 13.10 . But I am puzzled by the its manual of how to Install version.h : Install version.h: The file version.h is created when you ...
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1answer
2k views

How does Linux `uname -m` get its information?

Where does Linux uname -m get its information from? I am asking because I have a machine that is 64-bits for sure, and uname -a and uname -r confirm that, but uname -m prints i686. Where does it get ...
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1answer
629 views

Can't connect to windows server with rdesktop - “No valid license available” error

Im using Remotedesktop Client 0.23 on Linux Mint. When im trying to connect to a windows server, I get the following error: Disconnect: No valid license available I know that I'm supposed to delete a ...
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3answers
2k views

Uninstall Linux Mint without deleting partition?

I've got a dual-boot system using Windows 7 and Linux Mint 13. When I first installed Mint using the regular Mint installer, the installer did not give me the option of partitioning my drive, ...
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1answer
106 views

bash scripting, run commands in all subfolders with selections

I need to run this command trjconv -s run.tpr -f run.xtc -pbc mol -ur compact -o unwrap for all the sub-directories following the naming pattern of us_0.0, us_-0.2, us_-0.4 ... us_-3.8. The ...
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3answers
7k views

View Chrome history in Linux

How can I view the webpages that Google Chrome returns in the history search? I'm trying to recover a deleted forum post and the only place it shows up is when you open the history tab and search for ...
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2answers
140 views

How to enable/disable authentication without password when executing commands as superuser?

On a Fedora 19 system which I set up for somebody a while ago I noticed that no authentication is required when commands are executed as the superuser. So, for example, when running Yum Extender, ...
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1answer
367 views

SSH reverse tunnel to monitor and manage remote devices

I have a set a distributed set of devices running Ubuntu 12.04 that I am distributing to clients. I would like to manage them remotely. They may not have fixed IPs and potentially might be behind ...
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1answer
3k views

Adding a jar file to CLASSPATH is still not executable

Perhaps I just don't understand how the whole CLASSPATH environment variable works when trying to find .jar files on your system. I thought if you specified it, you could launch .jar files with java ...
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2answers
2k views

Running OLEDB VB6 Windows Progam Under Wine

I'm trying to install a VB6 Windows program that uses OLEDB to access VFP tables to run under Wine 1.0.1 on Ubuntu 9.10. Wine is configured to Windows version Windows XP. The program install ran okay, ...
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1answer
74 views

Echoing aliases to .bashrc

I want to echo an alias straight into my .bashrc file. Here is what I am using: echo alias cdear='cd | clear' >> .bashrc However, the new line in .bashrc does not contain the quote marks. I ...
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1answer
3k views

How to find supported screen resolution on linux, fedora and centOS [duplicate]

I'm trying to figure out how to find the screen resolutions available for a linux machine. If you set the wrong resolution or set vga=ask then it prompts you for available resolutions. Is there a way ...
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0answers
39 views

How to encrypt an entire Disk with full cross platform access? [duplicate]

I would like to encrypt an external USB Hard Drive in manner that allows full access (read+write) from Ubuntu trusty, Windows 8 and optionally Android and older Windows versions. With TrueCrypt ...
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1answer
57 views

Underlying standard for Vi/Vim keybindings [closed]

Updated question: Are the keybindings used by Vi/Vim (such as hjkl for directions, x for delete, y for yank, etc.) a part of a more general standard for efficient keyboard use used in other programs? ...
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0answers
2k views

how to install portable virtual box on LINUX HOST

I'm looking for info on Google. I can only find solutions on how to do it on a Windows host, but I want it done backward. I run Linux (Ubuntu) and I want to create a portable virtual machine to ...
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0answers
577 views

using NFS over unreliable networks (wifi/mobile)

I have a NFS server at home (and an openvpn connection that only works outside of home). My phone (Jolla) is basically Linux, and has mobile data/wifi/usb network capability. Basically, I want to ...
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0answers
1k views

Why I obtain this error message when I try to compile cgminer? autoreconf error

I am trying to install Cgminer on my RaspBerry (it use RaspBian that is a Debian minimalistic version) as explained here: https://bitcointalk.org/index.php?topic=494625.0 In particular the ...
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5answers
2k views

How to jump back to the first character in *nix command line?

When writing a long command in the *nix command line and having to go back to the first character, in order to add something at the beginning (for instance a nohup, when you realize the process will ...
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0answers
102 views

Changing ZFS pool partition size on “advanced format” hard drives

I have a system running Ubuntu 13.04 with three WD30EZRX drives (3 TBs each) in a pool with raidz1. These drives apparently have an "advanced format", but they misreport their physical block size. ...
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1answer
106 views

Linux: if LXDE + Gnome desktops are installed, are their services running at the same time?

Just the question of the title: If i have in my favourite distro two different desktops installed, lets say: LXDE and Gnome at the same time, are their own services running at the same time if i'm ...
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2answers
12k views

How can I use quotas in samba?

I have a simple set-up with just one public share on my configuration file. How can I restrict its size?
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1answer
823 views

Unable to install vlc and mplayer after update on fedora 18

I just updated fedora 18 using # yum update Then if I try # rpm -ivh http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm I get, Retrieving ...
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1answer
1k views

Linux browse and open network files with command line

I'm new to Linux. I have a Windows network connected to a Linux computer. When I try to browse Windows files from windows managers in Linux, it asks for user name, work group name and password. The ...
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5answers
11k views

How to run 'emacs' in the terminal emulator without a separate window?

I am looking to switch to Emacs from Vim and one thing that is keeping me away is that Emacs opens up a separate window of its own when run under X. Can I get the same behavior for Emacs as it does ...
0
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1answer
2k views

Error compiling gcc on Raspberry Pi

So, after solving the problems I had before (previous question here), I'm having some other trouble compiling gcc 2.95.3 on my Raspberry. This is what I get with the make bootstrap command. ...
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0answers
407 views

S.M.A.R.T. diagnostics recommends firmware upgrade

I have an Ubuntu server with a RAID-6 array. 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I was checking out the S.M.A.R.T. diagnostics for the ...
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1answer
803 views

Use a server as a remote SOCKS proxy using OpenSSH

I want to use a server I have as a SOCKS proxy for browsing from my laptop. According to OpenSSH's man page, you can do that with the opcion -D -D port Specifies a local ``dynamic'' ...
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2answers
1k views

How to set up password-less SSH for all users

I can set up password-less SSH for a single user by doing the following: 1) Generate RSA key pair for the local machine in ~/.ssh 2) Copy the local machine's public key to the remote machine's ...
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2answers
250 views

SSHing thru an HTTP proxy

Typical scenario: I'm trying to SSH thru a corporate HTTP proxy to a remote machine using corkscrew, and I get: ssh_exchange_identification: Connection closed by remote host Obviously, there's a ...
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1answer
266 views

Why wireless adatper stop to work?

today I correctly installed the driver for the TP-LINK TL-WN725N USB wireless adapter on my RaspBerry Pi (I use RaspBian that is a Debian), then I setted up the wifi using the wpa-supplicant as ...
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0answers
623 views

Debian 7: “Failure of key exchange and association”

I'm installing Debian using the Live CD with GNOME and the non-free packages. The internet works just fine when using the live CD, but when you try to open the installer and select a network, it gives ...
2
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1answer
680 views

How to change the size of Linux terminal

I'm using Fedora on a laptop with external display via VGA. (the internal one is disabled, but will open when it is booting up) Internal 1024*400, External 1920*1080. The resolution is normal under ...
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1answer
566 views

Error compiling gcc on Raspberry Pi (Raspbian): make: *** [bootstrap] error

I'm trying to compile the gcc version 2.95.3 on raspbian, I need it in order to compile the 2.6 kernel. I'm following this tutorial, but when I get to the bootstrapping step, i get make[1]: Entering ...
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3answers
176 views

Will Network Simulator work in Ubuntu when it's installed on an external hard drive?

I want to install Ubuntu 11.10 on my external hardisk in order to do my assignment running NS (Network Simulator). Can NS be running or working properly if my Ubuntu installed on an external hard ...
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2answers
324 views

Routing table with openvpn over an unstable wireless network

I'm connected to the Internet via a campus network: IP range is, let's say 10.42.0.0/16 and everything has to go through a proxy server 10.42.0.42. I'm sometimes connected to this network via a ...
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3answers
62 views

How and why are operating systems bootable from a USB?

I'm told to install ubuntu on my laptop for work in order to learn shell scripting. I've read the best way is to install ubuntu on a USB stick and partition my HDD. I'm curious how an OS is bootable ...
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3answers
2k views

How can I display details of a computer's hardware in linux?

How can I display information about a computer's hardware in linux? How could I display, for example, the amount of RAM, processor speed, HDD size, graphics card model etc.? Is there a way to view ...
0
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1answer
25 views

do I need to partition new external drive before writing disk image?

I am having trouble rescueing data from potentially dying hard drive (laptop Windows 7, not booting) previous attempts have resulted in the copied files substantially exceeding their original file ...
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4answers
6k views

Linux Mint UI Freezes Daily, How Do I Fix This?

I'm sort-of new to Linux, and new to Linux Mint 11. About once a day the UI will completely freeze - except the mouse will move. It won't respond to any clicks or any keyboard ctrl+alt+delete, so I ...
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2answers
1k views

how can I add records to the zone file without restarting the named service?

I'm working on centos6.5 and bind9 and I have managed to add records to a DNS zone by doing this steps: creating the key: dnssec-keygen -a HMAC-MD5 -b 128 -n HOST example.com. editing conf. file: ...
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2answers
419 views

I can't write to a folder which I'm a member of

I'm trying to setup folder access to a group so that all members of that group can create/edit/delete files within the folder. # create my group and add a member sudo addgroup dev sudo adduser martyn ...
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0answers
20 views

Is the USB network adapter driver correctly installed? [duplicate]

I am pretty new in Linux system administration and I have the following doubt. I have installed an USB Wireless adapter driver on my RaspBerry (on the RaspBian distribution that is a Debian) and I ...
2
votes
1answer
871 views

Combination of NAT, DHCP, and OpenVPN on lubuntu 14.04

Okay, so I've got a set up, where eth0 my internal IP address (192.168.1.3) it has been configured as my default gateway using the iptables this sudo sysctl -w net.ipv4.ip_forward=1 sudo ...
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6answers
25k views

Using udev rules to run a script on USB insertion

I'm trying to set up a script to run every time I plug in a USB device. I created the file /etc/udev/rules.d/90-local.rules and added the following rule: ACTION=="add", SUBSYSTEM=="usb", ...
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2answers
212 views

Replacing every 10th pipe with new line in unix

Lets say I have fields: name, number, id I have a data file: name1|number1|id1|name2|number2|id2...etc I want to replace every 3rd pipe with a new line or '\n' so I get: name1|number1|id1 ...