ing. When substring expansion of the form ${param:offset[:length} is used, an `offset' that evaluates to a number less than zero cou... able in the scope of the caller: its value is the offset of the first character to test in string. The offset is incremented until a char different from cha... f the different char. If the initial value of the offset corresponds to a char equal to char, the varia... want one character. The command dd needs to chop off the new line; this control character gets attache
