/usr/share/doc/libnet-sftp-foreign-perl/examples/capture_stderr.pl is in libnet-sftp-foreign-perl 1.69+dfsg-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #!/usr/bin/perl
use strict;
use warnings;
use Net::SFTP::Foreign;
use File::Temp;
my $hostname = shift // 'localhost';
my $ssherr = File::Temp->new or die "tempfile failed";
my $sftp = Net::SFTP::Foreign->new($hostname, more => qw(-v), stderr_fh => $ssherr);
if ($sftp->error) {
print "sftp error: ".$sftp->error."\n";
seek($ssherr, 0, 0);
while (<$ssherr>) {
print " ssh error: $_";
}
}
close $ssherr;
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