Q . How to Find and Replace text of any file using command line in linux.@mit $ingh. asked, May 31 ' 2017
I have a file named test.txt.
I want to replace all abc text to xyz using command line in ubuntu.
sed -i 's/original/new/g' file.txt
sed= Stream EDitor
-i= in-place (i.e. save back to the original file)
The command string:
s= the substitute command
original= a regular expression describing the word to replace (or just the word itself)
new= the text to replace it with
g= global (i.e. replace all and not just the first occurrence)
file.txt= the file name