Hello,
I need to make two scripts 'ftp-file-exist' and 'ftp-dir-exist' . My scripts
shall accept 4 parameters (SERVER USER PASSWORD REMOTE-PATH)
and return exist status (and print short message) telling whether
the path does not exist, or is plain file, or is a directory.
(It's like 'test -f', 'test -d' do, only via ftp).
I want to understand whcih lftp commands shall I use to do this
with minimum overhead.
Especially, is it possible to check for file/dir existance without
opening additional data socket ? Some people say to use rename and then
check for return code 350 (file exists). I'm not sure if this is good.
Is it good ?
I think if filesystem is read-only, then server can fail the rename
request with differenr error code, no ?
How do I issue NLST using lftp ? If I use NLST, how do I tell if this
is plain file, or directory ?
And if I use dir, then I have two questions
(1) how do I avoid listing of the dir contents, in case the tested name
happens to be a dir ?
(2) is lftp listing format server-independent ?
Regarding checking the dir existance, I am even less sure how to do it:
- how I basically check if directory exists, with minimum overhead ?
- how do I avoid listing of the contents if this happens to be a dir ?
(sort of like 'ls -d)
- can I check for dir existance without opening data socket ?
Thanks
Yakov Lerner
