sed Tutorial

sed (stream editor) is damn efficient and powerful. Most of the people, including myself, only use the basic features. Below links covered both basic and advanced stuff. I managed to use some of the advanced stuff to write the split csv exercise. It is as efficient as my python script

• Printing File Lines using Address and Patterns
  
• Delete File Lines Using Address and Patterns
  
• Find and Replace Text Inside a File Using RegEx
  
• How To Write to a File Using Sed
  
• How To Execute Multiple Sed Commands
  
• Advanced Sed Substitution Examples
  
• Multi-Line File Operation with 6 Practical Examples
  
• Append, Insert, Replace, and Count File Lines
  
• 7 Examples for Sed Hold and Pattern Buffer Operations