29 Aug

raspberry pi released 5$ model raspberry pi zero!

 

image

 

Raspberry Pi Zero has released out this week. It’s not powerful as Raspberry Pi 2. However  specs is so good for 5$ computer.

  • 1Ghz, Single-core CPU (Broadcom BCM2835 ARMv6 SoC full HD  processor)
  • 512MB 400 MHz RAM
  • Mini HDMI and USB On-The-Go ports
  • Micro USB power
  • HAT-compatible 40-pin header
  • Composite video and reset headers

Comparison with a playing card
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For more information : https://www.raspberrypi.org/blog/raspberry-pi-zero/

 

12 Aug

Replace a String in Multiple Files in Linux Using Grep and Sed

Example

This will search for the string ‘old-string’ in all files relative to the current directory and replace ‘old-string’ with ‘new-string’ for each occurrence of the string in each file.