15 Linux Command That Can Be Used To View System Info

Linux administrators and users often need to view various system information. Commands in this section can tell you anything from hardware details to your system's kernel version. They are especially useful for developers in various scenarios.


1. arch

This command will show you the architecture of your system.

2. uname-m

This is another command to view the architecture of the system.

3. uname-r

This command is used to check the kernel version that is being used in the system.

4. dmidecode-q

This command give you the hardware components in your system.

5. hdparm-i / dev / hda

This is the command that shows the characteristics of your hard disk.

6. hdparm-tT / dev / sda

This command is used in order to conduct tests readings on hard drives.

7. cat / proc / cpuinfo

These commands can help you in getting CPU information.

8. cat / proc / interrupts

These commands are used to interrupt a process.

9. cat / proc / meminfo

This command verifies the memory usage in your system.

10. cat / proc / swaps

These commands are used in order to swap files.

11. cat / proc / version

These three commands can display the kernel version for your system.

12. cat / proc / net / dev

These four commands are used to view the network adapters and display statistics of the system.

13. cat / proc / mounts

This command shows you the mounted file system.

14. lspci-tv

If you need to view the PCI display devices then this is the command to use.

15. lsusb-tv

This is the command for displaying USB devices.


Resource: efytimes

Resolve dell inspiron 5520 wireless detection problem in ubuntu

Most of the time when you trying ubuntu on your personal laptops, 

you may end up in wifi connectivity problem.

Here are the steps to resolve:

==============================

go to terminal or use ctr+alt+t to open a terminal and execute the following commands, 

sudo apt-get install linux-headers-generic
sudo apt-get install --reinstall bcmwl-kernel-source
sudo modprobe wl 

Tested in Dell inspiron 15r 5520 - works great. 

thanks to :http://askubuntu.com/questions/227394/lost-wi-fi-after-ubuntu-12-10-precise-pangolin-upgrade

35 Tutorials On PIC Microcontrollers

The Peripheral Interface Controller, better known as the PIC Micro-controller, but you can learn about them from various resources. Here we have compiled a group of 35 text-based and video tutorials that can help you in your learning endeavors.

Tutorial

1. Fast Track to PIC Programming

This tutorial focuses on the following topics,

- Write code to define outputs.
- Write code to read inputs and use those inputs to affect outputs.
- Write code to react to a clock cycle.
- “Burn” code into the device.
- Parts List and Sources
- Construction
- Programming
- “Burning” Code Into A PIC
- Final Words

2. PIC 16F877A Tutorials for Pitt Robotics Club

Want to code input and output operations in your robot? This tutorial will teach you how to do that.

3. WinPicProg PIC Tutorial

If the above tutorials didn't do the trick for you, then here are 15 more that you can use.

4. PIC Tutorials

This is a set of 10 tutorial on various aspects of PIC Micro-controllers from Googlium Electronics. According to the website, the tutorials can also be ordered separately.

5. PIC Tutorial

18 chapters and a complete insight into PIC micro-controllers and how to go about them.

6. PIC Microcontroller Tutorial

Here is the table of contents for this tutorial,

- PIC Microcontroller
- Development Contd.
- Architecture
- PIC18 Architecture
- Features & Peripherals
- Free TI Design & Simulation Tools

7. PIC Microcontroller Tutorial

This tutorial series contains six videos covering various aspects of 8-bit PIC micro-controllers.

Resource: efytimes