UNIX for Dummies Questions & Answers

typeset -u xname1=$mname1

line 40: typeset: -u: invalid option
typeset: usage: typeset [-afFirtx] [-p] name[=value] .

#!/bin/ksh

xname1=${mname1^^}

#!/bin/ksh

typeset [-afFirtx] [-p] [name[=value] ...]
  Declare variables and/or give them attributes.  If no names are given then display the values of variables.  The -p option will display the attributes  and
  values  of each name.  When -p is used, additional options are ignored.  The -F option inhibits the display of function definitions; only the function name
  and attributes are printed.  If the extdebug shell option is enabled using shopt, the source file name and line number where the function  is  defined  are
  displayed  as  well.   The -F option implies -f.  The following options can be used to restrict output to variables with the specified attribute or to give
  variables attributes:
    -a     Each name is an array variable (see Arrays above).
    -f     Use function names only.
    -i     The variable is treated as an integer; arithmetic evaluation (see ARITHMETIC EVALUATION ) is performed when the variable is assigned a value.
    -r     Make names readonly.  These names cannot then be assigned values by subsequent assignment statements or unset.
    -t     Give each name the trace attribute.  Traced functions inherit the DEBUG and RETURN traps from the calling shell.  The trace attribute has no special
            meaning for variables.
    -x     Mark names for export to subsequent commands via the environment.

<<-- BELOW LINE CHANGED -->>
typeset -u xname1=$mname1
<<-- TO BELOW LINE -->>
xname1=`echo "$mname1" | tr -s  '[:lower:]'  '[:upper:]'`