Re: Sigle keypress

[Paul Wilkins]

Volker Kuhlmann wrote:

Is there a common, standard way to wait for the press of any single key
in a batch job?
   

Tricky. Old-style (serial) terminals were outright unable to send
anything less than a line of input to the computer. What do you call a
"batch" job? Usually that means a background job which gets run when
there's time, and by definition implies it's not interactive, ergo, no
wait for keypress possible. If you mean to say shell script,
investigate the stty program and temporarily put the terminal into raw
mode and so on, perhaps it'll work. Of course, waiting for pressing
<enter> is trivial - that's called "read" in bash. You could also fire
up something like
kdialog --msgbox "Press any key to continue"

or write your own short program in C.
 

Something like the following?

/bin/*sh* -c "read -p \"Press CTRL+C to abort and ENTER to continue !\" _e"



or perhaps

echo "*Press any key* to continue..."
perl -e 'system("stty", "cbreak"); getc(STDIN); system("stty", "-cbreak"); '


or even

#!/bin/sh

echon() {
 if [ -n "`echo -n`" ] ; then
   echo "[EMAIL PROTECTED]"
 else
   echo -n "$@"
 fi
}
echon "Press any key to continue: "
TTYSTATE=`stty -g`
stty raw
dd if=/dev/tty of=/dev/null bs=1 count=1 > /dev/null 2>&1
stty "$TTYSTATE"
echo


or you could just

echo -n "Press any key to continue... "
stty cbreak
dd of=/dev/null bs=1 count=1 2>/dev/null
stty -cbreak
echo
--
Paul Wilkins