SHELL

linux while loop

while true;
do
	#code
;done

linux while loop shell

while ! [ "${finished}" ]; do
    ...
done

linux while loop shell

finished=false
while ! $finished; do
    ...
    # At some point
    finished=true
done

linux while loop shell

while [ "$finished" != "true" ]; do
   ...
done

linux while shell

while true; do your_command; sleep5; done