How to extract filename from path

Question

There should be something elegant in Linux API/POSIX to extract base file name from full path

Answer 1

Here's an example of a one-liner (given char * whoami) which illustrates the basic algorithm:

(whoami = strrchr(argv[0], '/')) ? ++whoami : (whoami = argv[0]);

an additional check is needed if NULL is a possibility. Also note that this just points into the original string -- a "strdup()" may be appropriate.