When the shell is started using the bash command, it can take options to modify its behavior. There are two types of options: single-character options and multicharacter options. The single-character options consist of a single leading dash followed by a single character. The multicharacter options consist of two leading dashes and any number of characters. Multicharacter options must appear before single-character options. An interactive login shell normally starts up with -i (start an interactive shell), -s (read from standard input), and -m (enable job control). See Table 9.8 on page 475.
|-c string||Commands are read from string. Any ...|