UNIX for Dummies Questions & Answers

im trying to figure out how to do the following:

using pipes to combine grep and find commands to print all lines in files that start with the letter f in the current directory that contain the word "test" for example?

again using pipes to combine grep and find command, how can I print all the file names starting with f whose names also contain the word "test", again in the current directory?

combining grep and cat commands , i need the print the number of lines in "testa.txt" and "testb.txt" that contain the string hello.c

combining tail and grep commands, if the string "pipes" is in the last 5 lines of a test.txt file, then i want to print the lines it is in.

combing head, tail, grep commands, if the string "pipes" is in lines 10-14 of file test.txt, the print the lines it is in.

thanks for any help!

This smells like homework, thread closed!