without password

how to login root without passwd in solaris trough telntet

What are you trying to achieve here?

how about using the rhosts file configured?

ssh would be a better option...

Of course, everyone will support ssh, but our dear friend is just querying about telnet, i guess so

Iam asking knowledge purpose
i don't no procedure,can u helpme procedure without passwd how to login telnet users?

Instead of spawning a telnet process, spawn a shell and send the rest of the commands.

spawn "/bin/sh"
send "telnet $HOSTNAME\r"
sleep 1
expect "ogin"
send "$username\r"
expect "Password"
send "$password\r"
send "\r\r"

etc...

thanks dear
which file i have write this one
this is scripting if there is any chance modify to file without passwd login to telnet user

I believe rhosts+telnet is what the OP is looking for. Here's Sun's document of rhosts, that should be sufficient to explain its use.

rhosts(4) � trusted remote hosts and users (man pages section 4: File Formats) - Sun Microsystems