I found a command to directly scp my file to a host (C) via another host (B) from my computer. The command is in this form:
scp -oProxyCommand="ssh -W %h:%p B" thefile C:destination
I used it and it works good in command line. but when I want to write an expect script using this command, I got some errors. the script I've written is in this form:
#!/usr/bin/expect set arg1 [lindex $argv 0] spawn scp -oProxyCommand="ssh -W %h:%p B" ./$arg1 C:destination interact
and the error is:
unknown option -- W
W option works in command line but not in expect script. Can anybody tell me why?