Open source blog, linux, php, python, security » Linux

How to learn uuid of your device and mount with uuid

ALonon — Sat, 04 Feb 2012 07:23:05 +0000

To learn uuid of your device for instance a usb or hdd, you can use

sudo blkid /dev/sda

output:

/dev/sda: UUID=”49eedef1-6331-4147-9bd5-a241ac16517c” TYPE=”ext4“

Linux (ubuntu) reads /etc/fstab file to determine which deviced will be mount.

To mount your devices automaticly when your computer restart add this line to /etc/fstab

UUID=49eedef1-6331-4147-9bd5-a241ac16517c /home/onur/Desktop/archive ext4 errors=remount-ro 0 1

This command will mount /dev/sda to /home/onur/Desktop/archive when your computer restart. To mount all devices in /etc/fstab you can use

mount -a

instead of reboot your computer. And with

mount

command you can list all mounted partitions.

Dual (double) Monitor in XFCE

ALonon — Wed, 21 Dec 2011 23:02:23 +0000

To use double monitor in extented mode you can use xrandr tool.
To identify your monitor just type xrandr

[onur@onur ~]$ xrandr
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 8192 x 8192
VGA-0 connected 1280×1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
1280×1024      60.0*+   75.0
1280×960       60.0
1152×864       75.0
1024×768       75.1     70.1     60.0
832×624        74.6
800×600        72.2     75.0     60.3     56.2
640×480        72.8     75.0     66.7     60.0
720×400        70.1
HDMI-0 connected 1680×1050+0+0 (normal left inverted right x axis y axis) 473mm x 296mm
1680×1050      60.0*+
1600×1000      60.0
1280×1024      75.0     60.0
1440×900       59.9
1280×960       60.0
1152×864       75.0
1152×720       60.0
1024×768       75.1     60.0
832×624        74.6
800×600        75.0     60.3
720×480        59.9
640×480        75.0     60.0
720×400        70.1

After that with a simple command you can use your dual monitor.

xrandr –output HDMI-0 –left-of VGA-0

Unfortunately it won’t work after reboot. To make it work after restart automaticly in fedora:

sudo vi /etc/rc.d/rc5.d/S25dualmonitor.sh

#!/bin/bash
output HDMI-0 –left-of VGA-0

exit vi

sudo chmod +x /etc/rc.d/rc5.d/S25dualmonitor.sh

Shortly, “S” in the name of file, means this file should be executed in boot process. 25 is order of process. For more:

http://www.yolinux.com/TUTORIALS/LinuxTutorialInitProcess.html

PS: I’m using XFCE. In other desktop environment xrandr may ouput an error about resolition. To solve it, make sure your graphic card driver installed correctly

How to learn your type of file stytem

ALonon — Mon, 31 Oct 2011 17:07:15 +0000

To learn what type of your filesytem you can use,

df -T

Filesystem Type 1K-blocks Used Available Use% Mounted on
/dev/sda1 ext4 469053936 5271756 439955596 2% /

Clean Format With DD

ALonon — Fri, 28 Oct 2011 17:05:14 +0000

If your data is important for you, you can prefer format with DD to make restore impossible. Simply to fill all your partions with “0″, use this:

dd if=/dev/zero of=/dev/sda1 bs=1M

You can mount your hdd with using a live linux.

check ethernet cable connected

ALonon — Thu, 22 Sep 2011 07:47:26 +0000

under linux you can use mii-tools

sudo mii-tool

eth2: negotiated 1000baseT-FD flow-control, link ok

/bin/bash^M: bad interpreter: no such file or directory

ALonon — Fri, 12 Aug 2011 07:09:15 +0000

/bin/bash^M: bad interpreter: no such file or directory

If you are using both windows and linux, because of they are using different charecter for tab, new line etc … , you can get this error.

simply use

dos2unix filename

if not installed

sudo apt-get install dos2unix

How to disable-enable touchpad in ubuntu 11.10

ALonon — Tue, 21 Jun 2011 22:35:06 +0000

Company that i worked in gave me a laptop with Windows 7. Actually I don’t like working with laptops because of their keyboard. But this one (hp pavilion dv6) seems OK because its keyboards is really big. After i installed UBUNTU 11.10 shortcut key for “disable touchpad” didn’t worked. It’s big problem because when i’m typing, always touching to touchpad ! After a huge research i found this:

sudo add-apt-repository ppa:atareao/atareao
sudo apt-get update
sudo apt-get install touchpad-indicator
After installation, open the indicator from Applications -> Accessories -> Touchpad Indicator and set your touchpad in top-right

This is the easiest way to disable keywords.

Netbeans Js highlight problem in ubuntu 10.10

ALonon — Tue, 29 Mar 2011 20:49:48 +0000

if you have same problem,

Open netbeans.
Tools – plugin – settings
Make sure all update centers checked.
From “updates” tab click reload catalog.
update all plugins.
restart netbeans.

I hope this will help …

AutoJump

ALonon — Fri, 25 Feb 2011 18:29:02 +0000

Think that cd command can learn which directory you generally use. And you can go inside them with typing only a few letters of them. This is what autojump do.

I always work in my localhost (/home/onur/Desktop/php/myproject).

This is not useful and fast ( even if i use tab )

cd /home/onur/Desktop/php/myproject

with autojump i only type

j my

“One of the most used shell commands is cd. A quick survey among my friends revealed that between 10 and 20% of all commands they type are actually cd commands! Unfortunately, jumping from one part of your system to another with cd requires to enter almost the full path, which isn’t very practical and requires a lot of keystrokes.”

Here you can get more info and download.

https://github.com/joelthelion/autojump

Ubuntu phpmyadmin not found problem solution

ALonon — Fri, 22 Oct 2010 01:44:44 +0000

Problem on http://localhost/phpmyadmin

Not Found

The requested URL /phpmyadmin was not found on this server.
Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.4 with Suhosin-Patch Server at localhost Port 80

Solution

sudo vi /etc/apache2/apache2.conf

add this somewhere

Include /etc/phpmyadmin/apache.conf

Then restart apache2

sudo service apache2 restart