# Using if [ ... ]
# If a string has not been initialized, it has no defined value.
# This state is ... $string1 ] # string1 has not been declared or initialized.
then
echo "String \"string1\" is not nu... # Shows $string1 as not null, although it was not initialized.
echo
# Let's try it again.
if [ -n "$s... s, the empty "$string1" and "]"
echo
string1=initialized
if [ $string1 ] # Again, $string1 s
es are declared:
mbfl_message_PROGNAME
must be initialised with the name of the script that'll be dis... ate to the position of the different char. If the initial value of the offset corresponds to a char equa
