Check that a file exists:
eval: isfile "foo.txt";
TRUE
A shorter synonym for Perl afficionados:
eval: -F "foo.txt";
TRUE
The full form, for programs (vs scripts):
eval: posix::stat::is_file (posix::stat "foo.txt") except _ = FALSE;
TRUE
Related tests:
| -D | isdir | posix::stat::is_directory |
| -P | ispipe | posix::stat::is_pipe |
| -L | issymlink | posix::stat::is_symlink |
| -S | issocket | posix::stat::is_socket |
| -C | ischardev | posix::stat::is_char_dev |
| -B | isblockdev | posix::stat::is_block_dev |