Log file to confirm SFTP Upload

Question

I am accessing a SFTP via LFTP using the script below. It runs from cron at 4/11/16/23. For some unknown reason at unknown intervals I am getting failures. How can print a log file that will confirm ls -l for the file I am uploading? I am hoping it can be wrapped into the existing script. Is there a better way to log a confirm than ls -l?

# Upload to SFTP via LFTP
#
host="hostname.com"
user="usrname"
pass="passw"
rdir="remote/dir"
file="upload-file.txt"

lftp -u $user,$pass sftp://$host -e "cd $rdir ; put $file ; bye"
# 

Answer 1

You can enable debug using, well, the "debug" command. With -o FILE option it can save the debug output to the file. Also you can add "ls -l >> file" after put command to append the ls output to the file.

For example:

lftp -e "debug -o debug.log; put file; ls file >> remote-ls.log; bye" sftp://user:pass@host.example.com/remote/path