Programming

hey peeps
i need to allow a user to input a line and then my job is to separate that line into tokens and print out what each command is. my question here is, if eg: 'ls > aifle' is entered as the input line, you would separate it and get three tokens: token 1 would be 'ls', token 2 '>' and 3'afile'. now how would you recognize what each command is, ie: if the token is a filename, or if the token is a pathname etc. i would realllllly appreciate some feedback.

when i have separated the input line into tokens, i need to fill out the following structure for each command:

struct Command_struct {
char *com_pathname; // what is the path name of the command
int argc; // the number of arguments to the command
// including the command itself
char *argv[MAX_ARGS]; // pointers to strings, each string
// is an argument for the command, including
// argument "0". The last pointer should
// be set to NULL.
char *redirect_in; // if this is not NULL, then the standard input
// is redirected to the given file name
char *redirect_out; // if this is not NULL, then the standard output
// is redirected to the given file name
char com_suffix; // ' ' - no command suffix (last command);
// '&' - the command is followed by '&'
// ';' - the command is followed by ';';
// '|' - the command is followed by '|'.
};