o in the standard input. Returns true if the user has typed yes, false if the user has typed no.
The optional parameter progname is use... fore dd is invoked and then restore them after dd has finished.
Here's the function:
read_a_char()
#
kings . . .
# Using if [ ... ]
# If a string has not been initialized, it has no defined value.
# This state is called "null" (... same as zero!).
if [ -n $string1 ] # string1 has not been declared or initialized.
then
echo "St... hane Chazelas points out,
# if [ $string1 ] has one argument, "]"
# if [ "$string1" ] has two arguments, the empty "$string1" and "]"
echo
st
