shell project-distribution-system-expect

install expect

[root@lynn-04 ~]# yum install -y expect

Use the script to log in to the remote machine to
write the script 1.expect the
content as follows:

[root@lynn-04 expect]# vim 1.expect
#!/usr/bin/expect
set host "192.168.130.128"     #定义变量
set passwd "6811327"             #定义变量
spawn ssh root@$host
expect {
"yes/no" {send "yes\r"; exp_continue }        #当提示语句出现yes/no 输入yes然后继续
"password:" {send "$passwd\r" }                #当提示语句出现password 输入密码
}
interact

Results of the

[root@lynn-04 expect]# chmod a+x 1.expect ; ./1.expect
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 07:48:41 2018 from 192.168.130.1
[root@lynn-06 ~]# 

Use the script to log in to the remote machine to execute the command and exit the
scripting 2.expect
as follows:

[root@lynn-04 expect]# vim 2.expect

#!/usr/bin/expect
set user "root"
set passwd "6811327"
spawn ssh [email protected]

expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
expect "]*"
send "touch /tmp/12.txt\r"
expect "]*"
send "echo 1212 > /tmp/12.txt\r"
expect "]*"
send "ls -l /tmp/12.txt\r"
expect "]*"
send "cat /tmp/12.txt\r"
expect "]*"
send "exit\r"

Results of the

[root@lynn-04 expect]# chmod a+x 2.expect ; ./2.expect
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 08:07:55 2018 from 192.168.130.116
[root@lynn-06 ~]# touch /tmp/12.txt
[root@lynn-06 ~]# echo 1212 > /tmp/12.txt
[root@lynn-06 ~]# ls -l /tmp/12.txt
-rw-r--r-- 1 root root 5 4月  25 08:32 /tmp/12.txt
[root@lynn-06 ~]# cat /tmp/12.txt
1212
[root@lynn-06 ~]# [root@lynn-04 expect]# 

The script passes the parameters to
write the script 3.expect the
content as follows:

[root@lynn-04 expect]# vim 3.expect

#!/usr/bin/expect

set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "6811327"
set cm [lindex $argv 2]
spawn ssh $user@$host

expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"

Results of the

[root@lynn-04 expect]# chmod a+x 3.expect ; ./3.expect root 192.168.130.128 ls
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 08:32:02 2018 from 192.168.130.116
[root@lynn-06 ~]# ls
anaconda-ks.cfg  com  zabbix-release-3.2-1.el7.noarch.rpm
[root@lynn-04 expect]# ./3.expect root 192.168.130.128 "ls;w;ps aux|grep sshd"
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 08:50:42 2018 from 192.168.130.116
[root@lynn-06 ~]# ls;w;ps aux|grep sshd
anaconda-ks.cfg  com  zabbix-release-3.2-1.el7.noarch.rpm
 08:52:15 up  1:04,  2 users,  load average: 0.00, 0.01, 0.01
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    192.168.130.1    07:48   15.00s  0.01s  0.01s -bash
root     pts/1    192.168.130.116  08:52    0.00s  0.00s  0.00s w
root        826  0.0  0.4 105996  4128 ?        Ss   07:48   0:00 /usr/sbin/sshd -D
root        947  0.0  0.5 148316  5376 ?        Ss   07:48   0:00 sshd: root@pts/0
root       1098  0.0  0.5 148312  5504 ?        Ss   08:52   0:00 sshd: root@pts/1
root       1118  0.0  0.0 112680   984 pts/1    S+   08:52   0:00 grep --color=auto sshd
[root@lynn-06 ~]# [root@lynn-04 expect]#