Ruby

Get a Remote FTP File's Last-Modified Time by Name

Demonstrates the Chilkat Ftp2.GetLastModifiedTimeByNameStr method, which returns the last-modified time of a named item in the current remote directory as an RFC 822 date-time string. The only argument is the filename.

Background: This queries one item's modification time directly (typically via MDTM) rather than pulling and scanning a whole listing — efficient when you already know the filename and just need its timestamp, for example to decide whether a local copy is stale. The RFC 822 string includes a timezone offset, so the moment is unambiguous.

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require 'chilkat'

success = false

#  Demonstrates the Ftp2.GetLastModifiedTimeByNameStr method, which returns the last-modified time
#  of a named item in the current remote directory as an RFC 822 date-time string.  The only
#  argument is the filename.

ftp = Chilkat::CkFtp2.new()

ftp.put_Hostname("ftp.example.com")
ftp.put_Username("myFtpLogin")

#  Normally you would not hard-code the password in source.  You should instead obtain it
#  from an interactive prompt, environment variable, or a secrets vault.
ftp.put_Password("myPassword")

success = ftp.Connect()
if (success == false)
    print ftp.lastErrorText() + "\n";
    exit
end

success = ftp.ChangeRemoteDir("public_html")
if (success == false)
    print ftp.lastErrorText() + "\n";
    exit
end

lastModified = ftp.getLastModifiedTimeByNameStr("report.pdf")
if (ftp.get_LastMethodSuccess() == false)
    print ftp.lastErrorText() + "\n";
    exit
end

print "Last modified: " + lastModified + "\n";

success = ftp.Disconnect()
if (success == false)
    print ftp.lastErrorText() + "\n";
    exit
end