bash String Operators

• These are called Variable Modifiers and Variable Expansion Substrings in the textbook (Page 823 to 828)

• They are the string operators that rely upon the ${ ... } form of variable expansion.

• One group is indicated by an operator following a colon : such as :x to remove the leading x characters from a string (strings are counted from 0).

• The other string operator group uses % and #.

• All are of the general form ${variable??word}