Finding the string length in scripting

Here are three scripts for finding the length of string using scripting

1. Using bash string operation

#!/bin/bash echo "Enter the string" read string len=${#string} echo $len

2. Using grep

#!/bin/bash echo "Enter the string" read string len=`echo $string | grep -o [a-z] | grep -c [a-z]` echo $len

3. Using wc

#!/bin/bash echo "Enter the string" read string len=`echo $string | wc -c` ((len--)) echo $len

Save them and give them execute permission e.g. chmod 777 strlen.sh

Execute it

$ ./strlen,sh Enter the string temp 4 $

Thus giving the correct length of the input string.