In POSIX sh, how to preserve variables set in a 'while read' loop when the input is continuous (event watcher)?
The named pipe is the solution, but you are using it in the wrong place.
NAMED_PIPE="/tmp/mypipe"mkfifo "$NAMED_PIPE"command > "$NAMED_PIPE" &while read -r foo bar; do MY_VAR="$foo" echo "$MY_VAR"done < "$NAMED_PIPE"echo "$MY_VAR"