i='\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\=\='
echo 0 >test
grep "$i" 0 >> test
echo 1 >>test
grep "$i" 1 >> test
echo 2 >>test
grep "$i" 2 >> test
echo 3 >>test
grep "$i" 3 >> test
echo 4 >>test
grep "$i" 4 >> test
echo 5 >>test
grep "$i" 5 >> test
echo 6 >>test
grep "$i" 6 >> test
echo 7 >>test
grep "$i" 7 >> test
echo 8 >>test
grep "$i" 8 >> test
echo 9 >>test
grep "$i" 9 >> test
vi test