Continue statement doesn't work as it should - bash

Question

For the context, i have an infrastructure of multiple machines using ssh. We connect via ssh as root on the machines without password thank's to the authorized_keys file on each mchine. We are adding regularly new machines in our infrastructure.

The problematic is to create a script that :

1. Pings all the machine (by parsing through a file containing all our machine names)
2. If the ping is successfull, Test the ssh connection withtout password (with the command ssh -o BatchMode=yes $machine uname -a )
3. If the ssh doesn't work AND it is because of this message : Are you sure you want to continue connecting (yes/no)? (because it's the first ssh connection to this machine for example), then with an expect script, send "yes"
4. If the ssh doesn't work AND it is because a password is asked, then with an expect script, send "CTRL + C"

My problem is that the two conditions 3. and 4. can both happen to one machine and i can't figure out how to use the continue statement in my script.

This specific case would be for a machine that asks for a "yes" but after that asks for password too.

Here is what the script looks like :

for machine in `cat ${liste} | grep -v \#` do ping -c1 ${machine} 2>&1 >/dev/null if [ $? -eq 0 ] then echo ${machine} >> ${pingok} ssh -o BatchMode=yes ${machine} uname -a &> $verifssh 2>&1 echo $? > ${exitcode} if grep -q "255" "$exitcode" then cut -c 15-74 $verifssh > $verifssh2 if grep "ication failed." "$verifssh2" then expect ${scriptexpectknownhosts} ${machine} 2>&1 >/dev/null continue 3 elif grep "Permission denied (publickey,password,keyboard-interactive)." "$verifssh2" then expect ${scriptexpectknownhosts} ${machine} 2>&1 >/dev/null echo "${machine} -> The machine asks for a password" >> "${sshnok}" fi elif grep -q "0" "$exitcode" then echo "${machine} works with ssh" echo "${machine}" >> ${sshok} fi else echo "${machine}" >> "${pingnok}" fi done 

Here is the expect script (it handles both situation) :

set machine [lindex $argv 0] spawn ssh $machine expect { "Are you sure you want to continue connecting (yes/no)? " {send "yes\r";exp_continue} -exact "Password: " {close} -re $prompt {send "exit\r";close} } 

So in a nutshell, my problem is, for the machine that ask for a "yes" answer and then need a password i want to register them in the ${sshnok} file but the continue doesn't work. I tried continue / continue 2 / continue 3 and it still doesn't want to go back in the previous loop.

Answer 1

As suggested in a comment, i did drop the continue and instead of multiple elif i just did some more if statements :

for machine in cat ${liste} | grep -v \#

do echo "." ping -c1 ${machine} 2>&1 >/dev/null if [ $? -eq 0 ] then echo ${machine} >> ${pingok} ssh -o BatchMode=yes ${machine} uname -a &> $verifssh 2>&1 echo $? > ${exitcode} if grep -q "255" "$exitcode" then cut -c 15-74 $verifssh > $verifssh2 if grep "ication failed." "$verifssh2" then expect ${scriptexpectknownhosts} ${machine} 2>&1 >/dev/null fi ssh -o BatchMode=yes ${machine} uname -a &> $verifssh 2>&1 cut -c 15-74 $verifssh > $verifssh2 if grep "Permission denied (publickey,password,keyboard-interactive)." "$verifssh2" then expect ${scriptexpectknownhosts} ${machine} 2>&1 >/dev/null echo "${machine} -> Probleme de cle ssh (demande un mdp)" >> "${sshnok}" fi ssh -o BatchMode=yes ${machine} uname -a &> $verifssh 2>&1 echo $? > ${exitcode} if grep -q "0" "$exitcode" then echo "${machine}" >> ${sshok} fi elif grep -q "0" "$exitcode" then echo "${machine}" >> ${sshok} elif grep -q "1" "$exitcode" then echo "wtf 1" fi else echo "${machine}" >> "${pingnok}" fi done 

Thank you very much for all the answers !