Search Results

I find the wording in the man page you quoted ambiguous. The way you describe the code acting fits one of the possibilities of that ambiguous statement; and the way you expect it to behave fits...

This is specified and expected behaviour. man bash:


A++ is post-increment, i.e. A is evaluated (to zero, thus return status 1) and then incremented. ++A will return the expected 0 .

This is because your input never gets terminated. Meanwhile awk is buffering the output. Watch what happens when you replace the loop by:

while read -s -n 1 >/dev/null 2>&1; do
case $REPLY in ...