UNIX, URGENT, Short problem

How do i change this grep command to send the header layout to either project3.df.output or project3.ui.output would you just change the "24" in the grep line to "df"? and would the out_file=project3\.df\.output

if [ `echo $1 | grep -c "24" ` -gt 0 ] #check if command line argument contains 24 or not

then

out_file=project2\.24\.out #set the out file to project2.24.out

else

out_file=project2\.12\.out #set the out file to project2.12.out

fi

echo "**************">$out_file #write the line to file in write mode so that file would get created or replaced

echo "">>$out_file #write the line to file in append more so that the line gets added in end of the file

echo "Student name : ">>$out_file #write the line to file in append more so that the line gets added in end of the file

echo "Project 2 CIS 129 Sec #">>$out_file #write the line to file in append more so that the line gets added in end of the file

echo $current_time>>$out_file #write the line to file in append more so that the line gets added in end of the file

echo "**************">$out_file #write the line to file in write mode so that file would get created or replaced