D r d x 2 d y 2. To do this subtract one number from the other and then take its absolute value. H e l l o Output 14.
Expr length Find out the length of this string from Linux Bash shell 57.
AB x b - x a 2 y b - y a 2. So in order to connect the two points the length of the line needs to have. Hello world Output. Now wc command is used for counting number of lines characters in a file.