Add text at the end of each line

Question

I\'m on Linux command line and I have file with

127.0.0.1
128.0.0.0
121.121.33.111

I want

127.0.0.1:80
128.0.0.0:80
121.121         


        

Answer 1

Concise version of the sed command:

sed -i s/$/:80/ file.txt

Explanation:

• sed stream editor
  • -i in-place (edit file in place)
  • s substitution command
  • /replacement_from_reg_exp/replacement_to_text/ statement
  • $ matches the end of line (replacement_from_reg_exp)
  • :80 text you want to add at the end of every line (replacement_to_text)
• file.txt the file name