________ is the practice of hiding information within other information.

When the computer compares two strings, it actually compares the __________ in the strings.

a) number of characters b) numeric codes of the characters c) character bits d) lengths of the leading alphabetic portions

What is the result of the following command sequences?

ls | wc -l rm ??? who | wc -l mv progs/* /users/steve/backup ls *.c | wc -l rm *.o who | sort cd; pwd cp memo1 .. plotdata 2>errors &