This is unix tools and scripting. For all of these questions, you may NOT use: grep, sed, awk, or perl if, for, while, until, case, or read.

Suppose we have a book corpus. Give a command to :

a) [1] remove all blank lines. "Blank," for this question, means "doesn't contain any characters." [06] or [f9]

b) [2] remove the last character of every line of the books corpus. [d]

c) [2] determine how often the letter 'u' or 'U' appear in the books corpus. [1]

Thank you very much. Your efforts are appreciated.