CkPython

Get a Remote File's Last-Modified Time

Demonstrates the Chilkat SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified date and time. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: The last-modified time is the workhorse timestamp — it updates whenever a file's contents change and is what incremental-sync logic compares to decide whether a file needs re-transferring. It is the most reliably supported of the three across servers and filesystems, which is why timestamp-based sync keys off it.

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import sys
import chilkat

success = False

#  Demonstrates the SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified
#  date and time.  The 1st argument is the remote path (or handle), the 2nd selects whether
#  symbolic links are followed, and the 3rd indicates whether the 1st argument is a handle.

sftp = chilkat.CkSFtp()

#  Connect, authenticate, and initialize the SFTP subsystem.
port = 22
success = sftp.Connect("sftp.example.com",port)
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

#  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.
password = "mySshPassword"

success = sftp.AuthenticatePw("mySshLogin",password)
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

success = sftp.InitializeSftp()
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

#  The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
#  The 3rd argument (bIsHandle) is False here because the 1st argument is a path, not an
#  open handle.
bFollowLinks = True
bIsHandle = False

lastModified = sftp.getFileLastModifiedStr("subdir/report.pdf",bFollowLinks,bIsHandle)
if (sftp.get_LastMethodSuccess() == False):
    print(sftp.lastErrorText())
    sys.exit()

print("Last modified: " + lastModified)

sftp.Disconnect()