1)Write a command that counts the total number of lines the string bird exists in a file named The Rhyme of Ancient Mariner in your current directory

2). Write a command that searches the string line in all .c and .txt files starting from your current directory and all sub directories. (1 point) Metacharacters in Regular Expression

3. What will the following patterns match? Explain. (4 points, 1 point each) a) ^bags$ b) ^$ c) l.g d) ^\.