29 Aug 15 raspberry pi released 5$ model raspberry pi zero!

 

 

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

 

For more information : https://www.raspberrypi.org/blog/raspberry-pi-zero/

 

12 Aug 15 Replace a String in Multiple Files in Linux Using Grep and Sed

Example

grep -rl 'old-string' ./ | xargs sed -i 's/old-string/new-string/g'

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.