Replace string within file contents

Question

How can I open a file, Stud.txt, and then replace any occurences of \"A\" with \"Orange\"?

Answer 1

If you are on linux and just want to replace the word dog with catyou can do:

text.txt:

Hi, i am a dog and dog's are awesome, i love dogs! dog dog dogs!

Linux Command:

sed -i 's/dog/cat/g' test.txt

Output:

Hi, i am a cat and cat's are awesome, i love cats! cat cat cats!

Original Post: https://askubuntu.com/questions/20414/find-and-replace-text-within-a-file-using-commands