I have a txt file that has a bunch of lines. I used grep to print lines matching pattern 1 to a second file. I want to modify the command to exclude the lines the match pattern 2. So the requirement is
if (match pattern 1) && (! match pattern 2 )
print to csv

Eg:
eat the apple

eat the orange

eat the apple and orange

Pattern 1: apple
Pattern 2: orange

Desired output:

eat the apple

Current output:

eat the apple

eat the apple and the orange

How should I go about it?

Thank you!

I have used the following commands but I either get all lines matching pattern 1 (including the ones matching pattern 2) or nothing at all:

1. awk ‘! /orange/ && /apple/’ input >> output;
   result:
   eat the apple
   eat the apple and the orange

2. sed -e “/apple/” | sed -e “/orange/!d” input >> output;
   error: extra characters

3. grep -i “apple” input >> output;
   result:
   eat the apple
   eat the apple and the orange

I also tried using grep | sed, but also resulted in an error.