I\'m new to this and trying to find out how to write a few of these scripts in UNIX: 1. Enter a numeric grade number when prompted \"Please enter your grade \" and receive the message \"You got a(n) <grade>\", where grade is the lettergrade you earned. Anything below 60% - F 60%-69% - D 70%-79% - C 80%-89%- B 90%-100% - A 2. Continue a loop until the user types anything by \"Y\". 3. Display this month\'s calendar (look at cal), the current date, and some other date like 5-7-2003 in the format May 7, 2013. Thanks! Solution 1)echo \"Enter the percentage\" read per echo \" Percentage: \" $per if [ $per -le 59 ] then echo \"you got grade <F>†elif [ $per -ge 60 ]&&[$per -le 69] then echo “You got grade <D>†elif [ $per -ge 70 ]&&[$per -le 79] then echo “You got grade <C>†elif [ $per -ge 80 ]&&[$per -le 89] then echo “You got grade <B>†elif [ $per -ge 90 ]&&[$per -le 100] then echo “You got grade <A>†else echo\"enter correct value\" fi 2)echo\"enter something\" read cha while [ $cha -ne \"y\" ] do echo \"you enter\"$cha read cha done 3) echo \"this months calender is\" cal echo \"current date is$(date)\" .