filtering strings from text files

[pouar]

I'm tring to create a bash script that removes text entries from text file 1
that are in file 2

text 1

abc
def
ghi

text 2

abc
ghi

my bash script so far

#!/bin/bash
cd /home/pouar/test
index=0
# read text 1
while read line ; do
	a[$index]="$line" 
	index=$(($index+1))
done < ./1

index=0
# read text 2
while read line ; do
	b[$index]="$line" 
	index=$(($index+1))
done < ./2
n=$((0))
m=$((0))
x=${#a[*]}
while ((n<x))
do
if [ "${a[$n]}"="${b[$m]}" ]; then #if string in text 1 is equal to string in text 2
n=$(($n+1)); #go to next line in text 1
m=$(($m+1)) #go to next line in text 2
else # or else
echo "${a[(($n))]}" #print string
n=$(($n+1)) #go to next line in text 1
fi
done

[Irithori]

grep can read patterns from a file, that should do it.

man grep

[pouar]

thanks it worked