I have a txt file
123 456 789 456 123456
I want to delete specific characters from the file i.e (123). I tried with
$ sed -i '/123/d' dummy.sh $ vi dumm.txt 456 789 456
In the below command when I run both the words (
123456) are getting deleted but I need to delete only
123 from the file
$ sed -i 's/123//g' dummy.sh $ vi dumm.txt 456 789 456 456
when I run the below command the
123 is getting replaced with null.
Can anyone say how to delete a whole line if it contains only specific number?