Sams Teach Yourself Shell Programming in 24 Hours, Second Edition

Hour 21

1:	Write a function named toLower that converts its arguments to all lowercase and outputs the converted string to STDOUT. (HINT: Use tr.)
A1:	One possible implementation is ################################################ # Name: toLower # Desc: changes an input string to lower case # Args: $@ -> string to change ################################################ toLower() { echo $@ | tr '[A-Z]' '[a-z]' ; }
2:	Write a function named toUpper that converts its arguments to all uppercase and outputs the converted string to STDOUT. (HINT: Use tr.)
A2:	One possible implementation is ################################################ # Name: toUpper # Desc: changes an input string to upper case # Args: $@ -> string to change ################################################ ...