Expect redirect stdin

I'm running a script on a remote server like using this command: ``` ssh root@host 'bash -s' < script.sh ``` Now I'm trying to use expect to handle the password prompt. This is the script: ``` #!/usr/bin/expect set cmd [lindex $argv 0] spawn -noecho ssh root@host $cmd expect { "password:" { send "password\r" } } ``` If I run the script, it gives no output: ``` ./ssh.exp 'bash -s' < script.sh ``` I know that's not the way to use ssh without password, but this is not the question right here. UPDATE I tried the idea of glenn jackman with a simple script but it's not working. This is the script I'm using: ``` #!/usr/bin/expect spawn ssh xxx@xxx expect "*?assword:*" send "pwd\r" send "echo hello world" ``` This is the output I get: ``` [xxx@xxx bin]$ expect -d my.exp expect version 5.43.0 argv[0] = expect argv[1] = -d argv[2] = my.exp set argc 0 set argv0 "my.exp" set argv "" executing commands from command file my.exp spawn ssh xxx@xxx parent: waiting for sync byte parent: telling child to go ahead parent: now unsynchronized from child spawn: returns {7599} expect: does "" (spawn_id exp6) match glob pattern "*?assword:*"? no xxx@xxx's password: expect: does "xxx@xxx's password: " (spawn_id exp6) match glob pattern "*?assword:*"? yes expect: set expect_out(0,string) "xxx@xxx's password: " expect: set expect_out(spawn_id) "exp6" expect: set expect_out(buffer) "xxx@xxx's password: " send: sending "pwd" to { exp6 } send: sending "echo hello world" to { exp6 } write() failed to write anything - will sleep(1) and retry... ``` UPDATE I managed it to get my script to run. This is the result which works: ``` #!/usr/bin/expect set user [lindex $argv 0] set host [lindex $argv 1] set pwd [lindex $argv 2] spawn ssh $user@$host bash -s expect { "?asswor?: " { send "$pwd\n" } } while {[gets stdin line] != -1} { send "$line\n" } send \004 expect { "END_TOKEN_OF_SCRIPT" { exit 0 } default { exit 1 } } ```