Re: fileexist(f)

[Ethan A M. <merritt@u.washington.edu>]

On Thursday 09 March 2006 11:03 pm, Petr Mikulik wrote:
> 
> No examples has been presented until now, but I've just constructed it this 
> way:
> 
> fileexist(name)=\
> system(sprintf("bash -c \"if [ -a %s ]; then echo 1; else echo 0; fi\"", name))
> 
> print fileexist('a')
> print fileexist('aa')
> 
> Any better solution?

Didn't we start this whole discussion thread with comparisons of
"find" vs. "test" and their use to check file existence or updates?

ierr = system("test -e 'a'")
if (ERRNO) print "No such file"

ierr = system("test 'a' -nt 'b'")
if (!ERRNO) print "a is newer than b"

Maybe that was another thread....

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle 98195-7742