I don't know why this happens but I have the following snipped:
exec<$filename
while read line
do
...
done
in order to read a file line by line
after that I have
while true
do
echo "message"
read WISH2
case $WISH2 in
y|Y|yes|Yes) dosomething; break ;;
n|N|no|No) EXIT ;;
*) echo "Not valid option";
esac
done
what happens is that the last loop never stops at the read! just displays message message message message
does anyone know how to fix this?!
I'm pretty sure you meant exit instead of EXIT. In your code that's the only way it could continuously print "message".
Another problem is that you're not checking for EOF.
what happens is that the last loop never stops at the read!
Your 2nd loop is expecting read to get input from the console but earlier you redirected STDIN to your file with exec<$filename, don't do that.
Instead use:
while read line
do
...
done < "$filename"
Also, as others have noted you want exit instead of EXIT
Potential Issue in Snippet 1:
exec<$filename # This is redirecting to STDIN. Quotes missing.
while read line
do
…
done
Potential Solution:
exec 4<"$filename" # Redirected to 4 {1-3 and 9+ are used by Shell}
while read line
do
…
done <&4
OR
while read line
do
…
done < "$filename"
Potential Issue with snippet 2:
while true
do
echo "message"
read WISH2
case $WISH2 in # missing quotes
y|Y|yes|Yes) dosomething; break ;; #Space between do
n|N|no|No) EXIT ;; # exit should be in lower case
*) echo "Not valid option"; # missing a semi-colon
esac
done
Potential Solution to snippet 2:
while :
do
echo "message"
read WISH2
case "$WISH2" in
y|Y|yes|Yes) do something; break ;;
n|N|no|No) exit ;;
*) echo "Not valid option";;
esac
done
