See visualSelect menu system for a full implementation of "getch" capturing function keys, arrow keys, and other cursor movement keys.
################################################################
#### Korn Shell function to read one character from
#### standard input (STDIN) without requiring a carriage
#### return. This function would typically be used in a
#### shell script to detect a key press.
####
#### Load this file into your current environment as follows:
####
#### . ./getch
####
#### Thats "dot-space-dot-slash-getch-dot-sh"
####
#### You will then be able to issue the command "getch"
#### from your current environment to retrieve one character.
####
#### SYNTAX: getch [-q]
####
#### -q = quiet mode, no output
####
#### AUTHOR: Dana French (dfrench@mtxia.com)
####
####
#### See http://www.mtxia.com/js/Downloads/Scripts/Korn/Functions/visualSelect/index.shtml
#### visualSelect menu system for a full implementation of "getch"
#### capturing function keys, arrow keys, and other cursor movement keys.
####
################################################################
function getch {
typeset TMP_GETCH
typeset STAT_GETCH="0"
stty raw
TMP_GETCH=`dd bs=1 count=1 2> /dev/null`
STAT_GETCH="${?}"
stty -raw
if [[ "_${1}" != "_-q" ]]
then
print -r -- "${TMP_GETCH}"
fi
return ${STAT_GETCH}
}