gildan2020
asked on
while loop + case= infinity??
hello every1...i hope u all can help me with this code:
--------------------------
echo -n "character:"
read char
while test -n $char
do
case $char in
a)echo "you typed a";;
b)echo "you typed b";;
c)echo "you typed c";;
*)echo "you typed something else";;
esac
done
--------------------------
da prob is...da result will keep looping non-stop
how do i prevent dis infinite loop or is there another better method?
i'm using bash shell in mandrake linux 9.0 to generate da codes.
gildan2020
--------------------------
echo -n "character:"
read char
while test -n $char
do
case $char in
a)echo "you typed a";;
b)echo "you typed b";;
c)echo "you typed c";;
*)echo "you typed something else";;
esac
done
--------------------------
da prob is...da result will keep looping non-stop
how do i prevent dis infinite loop or is there another better method?
i'm using bash shell in mandrake linux 9.0 to generate da codes.
gildan2020
ASKER CERTIFIED SOLUTION
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It's up to you. I have never used "test" that I can remember. In additon, I would not have used [[ -n ... either
I would have used an if statement instead because it is more readable.
I would have used an if statement instead because it is more readable.
Roger that, I usually use "if test -n" or "if [ -n". ;)
ASKER
well, thanx for ur help, rfr1tz
i'll keep in mind of both ur comments :-)
i'll keep in mind of both ur comments :-)
ASKER
i hav to alter the codes a bit in order for it to work with my
situation...anyway...it reli helps
situation...anyway...it reli helps
Nothing wrong with learning how to write scripts portably whenever possible.