Using Loop

while read word;
do
   echo "${word}" | cut -c3
done

Shortcut

cut -b3

for i in {1..100}; do read line echo "$line" | cut -c 3 done

Does anyone know why the test case 2 if failing for below code:?

while read -r line; do

echo "${line:2:1}"

done

cut -c3

echo "hello" |cut -c3

output = l

cut is a command-line tool used to extract sections from each line of input — by bytes, characters, or fields.

1. Using cut Command: echo "$line" | cut -c3 Best For: Simple, single-character extraction. Limitation: Only handles one character at a time.
2. Using Bash String Slicing Command: echo "${line:2:1}" Best For: Efficient, direct slicing of strings. Limitation: Fails on short or empty lines.
3. Using awk Command: echo "0, 3, 1)}' Best For: More complex extraction with flexibility. Limitation: Overhead for simple tasks.
4. Using while read Loop Command: while read line; do echo "${line:2:1}"; done Best For: Iterating over multiple lines. Limitation: Fails if lines are too short