Shell scripts to securely log in to remote machine from a shared machine.Users can use `ps aux` to see what others are doing. So if you set password to perform auto-login in command arguments, that password will be easily seen by others.expect script can read from file, that means if you stores password in a file, `ps aux` will not expose your p…

door.lst

# password file that stores user name and password
sessionid 192.168.1.15 user123 pass123

get_passwd.sh

session=$1
col=$2
pfile=$3

# col1    col2     col3      col4
# id      ip     username   passwd

awk '{if ($1 == session) { print $col; exit; } }' session=$session col=$col $pfile

login.exp.sh

#!/usr/bin/expect -f

set timeout 360
set session [lindex $argv 0]

# col1    col2     col3      col4
# id      ip     username   passwd

set ip [exec bash get_passwd.sh $session 2 door.lst]
set user [exec bash get_passwd.sh $session 3 door.lst]
set pass [exec bash get_passwd.sh $session 4 door.lst]

spawn /usr/bin/ssh -o ServerAliveInterval=120 -l $user $ip

while (1) {
expect {
  "*password:" { send "$pass\r"; break; }
  "yes/no" { send "yes\r"; break; }
}
}

interact
exit