Issue
I have file with the below info
testing
testing
testing
I want to insert a word(tested) before the first testing word using sed or any linux command
need to get output like
tested
testing
testing
testing
Thanks
Solution
For lines consisting of "testing" exactly:
sed '0,/^testing$/s/^testing$/tested\n&/' file
For lines containing "testing":
sed '0,/.*testing.*/s/.*testing.*/tested\n&/' file
For Lines Starting with "testing"
sed '0,/^testing.*/s/^testing.*/tested\n&/' file
For lines ending with "testing":
sed '0,/.*testing$/s/.*testing$/tested\n&/' file
To update the content of the file with the result add "-i", example:
sed -i '0,/testing/s/testing/tested\n&/' file
Answered By - Yahya Yahyaoui
