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What is the best way to automate the ftp process. I mean can a script be written which when executed would ftp to a remote system and fetch files with out human intervention.

Please suggest.

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11 Answers 11

I personally use lftp, which is highly scriptable (see this tutorial).

Of course, you can also write an adapted FTP client using perl/ruby/python/your-prefered-scripting-language.

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I agree. lftp is the best tool to use. Even supports parallel ftp processes and automation of sftp. – fpmurphy1 Aug 18 '09 at 14:05

There are Perl packages for this purpose. For instance CPAN modules Net::Lite::FTP and Net::FTP.

It will allow your script to make decisions based on information from the server. E.g. if the file name is not constant (may contain a date or a version number) then the script can process a directory listing before deciding which file to download.

I have succesfully used it for automating downloading/updating of large molecular sequence databases.

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I think you can use wget to do such a thing:

WGET is free so you can grab that and check the help file

Something like:

wget -user=username -pass=password

Obviously usable with variables in a script etc.

Just noticed this is for solaris, so not sure if this would work.

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It might be installed in /usr/sfw/bin, which is probably not in your search path by default. If you can't find it there, look on – Barry Brown Aug 18 '09 at 10:33

I like curl the best:

curl is a command line tool for transferring files with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS and FILE. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, kerberos...), file transfer resume, proxy tunneling and a busload of other useful tricks.

Very handy for all your URL-fetching needs.

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The Solaris ftp command can be automated with a netrc(4) file. The macdef init is the key. sample:

cat ~/.netrc
machine login my-ftp-account
password password4host1
macdef init
/pub/DOWNLOAD get readme

default login anonymous password


  1. The two blank lines after the init macro definition are important,
  2. This also automates an interactive ftp session to remote-host1.

Your script can create the netrc file before it calls ftp.

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You've gotten a lot of recommendations already to use something different than FTP. That's fair, because scripting FTP is a little annoying, but it's not necessarily portable, nor is it teaching you anything new.

It's actually quite simple to script by directing commands to ftp from STDIN. This sort of thing works for many kinds of tools.

cd /target
ftp -n host <<EOF
USER falken
PASS joshua
cd place
get file
echo 'hi! um... what'\''s this all about again? I am done.'

The login part could be automated by adding information to the script owner's ~/.netrc file. In fact, if you man netrc you'll learn a lot about automating ftp.

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On Solaris you can also use expect automation tool. Of course you should install it first. For FTP you can find an example in Wikipedia article on Expect.

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expect works on several platforms – warren Aug 19 '09 at 22:53

Hi I've written one once for our needs,







current_date="$(date +%Y%m%d)"


ftp -in $hostname $port << EOF

quote user $username

quote pass $password


get $remotefile $storage_path/

delete $output_dir/output$current_date.tar.gz




exit 0

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ncftp usually includes ncftpget and ncftpput, which would be suitable for inclusion in scripts. They can usually be built from source, or check csw or sunfreeware.

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I typically just use ftp with an authentication file .netrc and then cat everything into it. For example

cat >> EOF | ftp
open ftpserver
mget *
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