Did you try to google your question?
First two hits:
https://stackoverflow.com/q/25045985/850848
https://superuser.com/q/349474/213663

Hi there,

How can I name a "single folder with a random name" in the script to copy files to it?

An example of this script:

option batch on
option confirm off

# open sftp connection
open sftp://udbstorage:mypass@myserv

# synchronize files from server
put F:\In_Work\Workspase1\forThumbnails\1190938BO /home/app/storage/CNEB1190938BO/%random%/flipbook/images

pause
exit



Tnx!