I want to send two or more messages to a TCP server using telnet client from bash. This implies that I should maintain the session open while my script is in execution.
For example, the script flow should be:
1) open telnet session 2) send 1st message 3) sleep 1 s 4) send 2nd message 5) close session What is the best way to accomplish this ?
expect is the best tool for such usage cases. Here is my answer to a similar question as yours on Unix & Linux site. It can be simply adapted to your case:
#!/usr/bin/expect spawn telnet 10.0.0.1 expect "ogin:" send "myuser\r" expect "assword:" send "mypassword\r" expect "#" send "command1\r" expect "#" sleep 1 send "command2\r" expect "#" send "exit\r" 