A code snippet for the parameters number checking in bash scripting
#!/bin/bash
ARGS=2
E_BADARGS=65
if [ $# -ne "$ARGS" ]
then
echo "Usage: `basename $0` <arg1> <arg2>"
exit $E_BADARGS
fi
ARG1=$1
ARG2=$2
command $ARG1 $ARG2
exit 0
it checks if parameter numbers is equal to ARGS, executing the command if true and exiting from script with error code 65 (Wrong Parameter Numbers) otherwise.
