mktemp
replaces the contents of the string pointed to by
template
with a unique file name, and returns
template.
The string in
template
should look like a file name with six trailing
Xs;
mktemp
will replace the
Xs
with a character string
that can be used to create a unique file name.
Errors
mktemp
will assign to template the empty string if it
cannot create a unique name.