Assignment $3$: Due date: April $9,11$:$59$ PM Create Assigument $3$ directory and perform all the following steps in it$.$ Step $1$: Create the following files Employee$1.$txt and Employee$2.$txt using $","($comma$)$ as delimiter : Join the above two files using join command and append the result in Emp$3.$txt$.$ Then cut the second and third column of Emp$3.$txt using cut command and store the result in emp$\_2\_4.$txt file. Print the Emp$3.$txt using pr command. Step $2$: Sort the Employee$2.$txt based on the second column of the file and store the result in emp$2\_$sort.txt file. Paste the Employee$1.$txt and Employee$2.$txt using paste command and redirect it to Emp$4.$txt file. Step $3$: Create a file Contact.txt having following content name Mark address $123,$ avenue point, Toronto. PIN X$23$CDC Use sed and replace the value after the 'name' to John; and the value after the 'address' as $456,$ point avenue, circle point, Toronto. Redirect this output in Contact$2.$txt file. Step $4$: Create a file data.txt having contents: Linux is a family of open$-$source software. Linux was used for personal computers. Linux is case sensitive$.$ Use sed to Show the lines and the number of lines that do not contain word 'Linux' in that file. Use grep to Show the lines and number of lines that contain word 'free'. Use grep to show the lines that end with $\text{'}$

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$\text{'}.$ Use grep to show all the lines having a word starting with $\text{'}$co$\text{'}.$ Use sed to append the string 'Peter is my friend' after third line of data.txt$.$ Append all the above created files in one file ASSIGN$3.$txt and email$/$dgra$-$drop it to yourself. Create a file that contains ALL commands used to produce this assignment called assign$4\_1.$txt$,$ then email yourself this file as well. Submit both the files on slate dropkox.