emanuele6 1709648143 learn The `%c' format specifier in sh's printf does not print the character of the ASCII code corresponding to its number argument as it does for other languages' printf; it takes a string argument, and prints its first byte; it is similar to `%.1s', except that if the argument is an empty string, it will print a NUL character (\0) instead of printing nothing.
emanuele6 1709648549 forget
emanuele6 1709648620 learn The %c format specifier in sh's printf does not print the character of the ASCII code corresponding to its number argument as it does for other languages' printf; it takes a string argument, and prints its first byte; it is similar to %.1s, except that its behaviour is unspecified if the argument is an empty string (in bash, it prints a NUL character instead of printing nothing.)