Write a script to learn command line argument

Definition : Write a script that behaves both in interactive and non-interactive mode. When no arguments are supplied, it picks up each C program from current directory and lists the first 10 lines. It then prompts for deletion of the file. If the user supplies arguments with the script, then it works on those files only.

File Name : ex26.sh

flag=1

if [ $# -ne 0 ]

then

            # if user provide arguments

             echo $* >temp

            flag=1

else

             # if user not provide arguments

            ans=`ls *.c`

            if [ "" == "$ans" ]

            then

                        echo "There are no c file"

                        flag=0

            else

                        ls *.c>temp

                        flag=1

            fi

fi

if [ $flag -eq 1 ]

then

            for filename in `cat temp`

            do

                        if [ -f $filename ]

                        then

                                    echo "_______________ $filename _______________"

                                    sed -n -e "1,10 p" $filename

                                    rm -i $filename

                        fi

            done

rm temp

fi