1. 將以下指令碼存成檔案，並修改其許可權

$ chmod 775 establish-ssh.sh

2. 在同一目錄下新建servers.txt檔案，並填入相關IP

[email protected]:capra(master)$ cat servers.txt
192.168.121.10
192.168.121.11
192.168.121.12
192.168.121.13
192.168.121.14
192.168.121.15

3. 執行establish-ssh.sh檔案

$./establish-ssh.sh

指令碼檔案

#!/bin/bash
# The name who want to ssh without password
 

USER_UID=linyimin
# The System user home directory
USER_DIR=/home/linyimin
# Password of the other server user
USER_PASSWORD='password'

#################################### main #####################################
if [ -f servers.txt ]
then
  :
else
  echo
  echo "########### Please touch File: servers.txt ##########################"
 

  echo "########### servers.txt For example #################################"
  echo "########### 192.168.1.10 ############################################"
  exit 1
fi

# if expect is not installed then install it
dpkg --get-selections | grep -q expect
if [ $? -eq 0 ]
then
  :
else
  echo "########## Please install expect #####################################"
 

  exit 1
fi

# if id_rsa.pub not exist,
if [ -f $USER_DIR/.ssh/id_rsa.pub ]
then
  :
else
  expect -c "
  spawn ssh-keygen
  expect \"Enter file in which to save the key*\"
  send \"\r\"
  expect \"Enter passphrase*\"
  send \"\r\"
  expect \"Enter same passphraseagain:\"
  send \"\r\"
  "
fi
for SSH_IP in `cat servers.txt`
do
  echo "$SSH_IP"
  expect -c "
  spawn ssh-copy-id -i $USER_DIR/.ssh/id_rsa.pub $SSH_IP
  expect \"*yes/no*\"
  send \"yes\r\"
  expect \"*password*\"
  send \"${USER_PASSWORD}\"
  "
  if [ $? -eq 0 ]
  then
    echo "------------- $SSH_IP is ok. -----------------------"
  else
    echo "------------- $SSH_IP is fail ----------------------"
  fi
done

存在問題 在使用的時候發現IP對應的主機不存在的時候，列印的還是------------- $SSH_IP is ok. -----------------------， 也就是expect命令執行完成之後$?始終是0