Bash shell script to find out the largest value from given command line arguments

Write a shell script to find out the largest value from the given number of command-line arguments.

Example:

Special variables in bash:

$@- All arguments.
$#- Number of arguments.
$0- Filename.
$1, $2, $3, $4 ... - Specific arguments.

Approach

• If the number of arguments is 0, end the program.
• If not zero, then
  • Initialize a variable maxEle with first argument.
  • Loop over all the arguments. Compare each argument with maxEle and update it if the argument is greater.

#Check if the number of arguments passed is zero
if [ "$#" = 0 ]
then
    #Script exits if no
    #arguments passed
    echo "No arguments passed."
    exit 1
fi

#Initialize maxEle with
#the first argument
maxEle=$1

#Loop that compares maxEle with the
#passed arguments and updates it
for arg in "$@"
do
    if [ "$arg" -gt "$maxEle" ]
    then
        maxEle=$arg
    fi
done
echo "Largest value among the arguments passed is: $maxEle"