Shell Programming and Scripting

HI, i would like to ask you several question regarding a shell ( #!/bin/sh)
i need to make a program that able to do :
1.Accept the name of a logle as the sole command line argument
2.search the specied logle for lines that have been added since the previous search.
3. construct an e-mail reporting any lines that contain either \error" or \warning" in any combination of upper and lower case letters
4. send the e-mail to the address specied in the recipient shell variable.
5. instead of listing multiple lines with the same message, it lists one instance
of each duplicated line, two lines that share everything except the timestamp are considered to be identical lines.
6. follows the single instance of a duplicated line with a line that reports how many times the previous line repeats
7. report the above to the command line when it is called with the name \logcheck"

best regards,

Someone who need help.

Please post homeworks in the appropriate forum. https://www.unix.com/homework-coursew...ons-forum.html

By the way, what is a "logle" ?