(Perl) SFTP Synchronize Directory Tree - Download

Demonstrates how to download files to synchronize a local directory tree with a remote directory tree. The SyncTreeDownload method recursively descends the remote directory tree and downloads files based on existence, last-mod date/time and/or size differences.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# This example requires the Chilkat SFTP API to have been previously unlocked.
# See Unlock Chilkat SFTP for sample code.

$sftp = chilkat::CkSFtp->new();

$success = $sftp->Connect("my-ssh-server.com",22);
if ($success == 1) {
    $success = $sftp->AuthenticatePw("mySshLogin","mySshPassword");
}

if ($success == 1) {
    $success = $sftp->InitializeSftp();
}

if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# Synchronize the remote directory tree rooted at "syncDownloadTest/xml"
# with the local directory tree rooted at "qa_output"
# Both directories are relative paths.  The remote directory
# is relative to the HOME directory of the SSH user account.
# The local directory is relative to the current working directory of the process.
# It is also possible to use absolute paths.

$remoteDir = "syncDownloadTest/xml";
$localDir = "qa_output";

# Possible modes that can be passed to the SyncTreeDownload method are:
# mode=0: Download all files
# mode=1: Download all files that do not exist on the local filesystem.
# mode=2: Download newer or non-existant files.
# mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
# mode=5: Download only missing files or files with size differences.
# mode=6: Same as mode 5, but also download newer files.
# mode=99: Do not download files, but instead delete remote files that do not exist locally.

# This example will use mode 6 to download missing, newer, or files with size differences.
$mode = 6;
# This example will turn on recursion to synchronize the entire tree. 
# Recursion can be turned off to synchronize the files of a single directory.
$recursive = 1;
$success = $sftp->SyncTreeDownload($remoteDir,$localDir,$mode,$recursive);
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";