UNIX for Dummies Questions & Answers

test=$(wc -l $X | awk '{print $1}')

OR

test=$(cat $X | wc -l)

test=$(wc -l < $X)

name=$($(basename $X) | sed 's/.txt//g')
    
awk -v NM="$name"'$0 != ""{ print > NR"-"NM".txt" }' $X

FILES="data/*"
for X in $FILES
do
    name=${X%.*}   #removes extensions of the file
    name_new=$(echo "$name" | awk -F "/" '{print $NF}')   # removes all the directory path - You can try just with echo for your desired outputs..
    awk -v NM="$name_new"'$0 != ""{ print > NM"-"NR".txt" }' $X 
done