exec()

[Anon]

yo!
I need to execute the command in shell, so I wrote the following in my php file, but it seems not working. why???

<?
exec("/usr/bin/b5togb <$InputFile> $OutputFile");

?>

I create a form in a html with var $InputFile and $OutputFile and use submit to call the above php file for execution.

Please kindly help!

[[deleted]]

1) did you print the command to see if the vars are printed correctly?
2) does the webserver have permission to execute b5togb?

[Anon]

I did. but it cannot print the var within the "< >" , $InputFile=/tmp/aaa.txt, $OutputFile=/tmp/abc.txt, the print out is like this:

exec('/usr/bin/b5togb /tmp/abc.txt')

and I try another command without "< >", the print out is

exec("/bin/touch /tmp/abc.aa")

which I think should be worked, however the file is not created!!!