Bash脚本生成和执行命令

Question

I am trying to create a bash script to ssh into a session and run a command then exit out of the session. currently this is what i have so far:

#!/usr/bin/expect -f

spawn ssh root@sc
expect "assword:"
send "password\r"
expect "#"
send "cd /data2/someDirectory\r"------> don't see this command being executed

and the output

[user@San ddb]$ test1
spawn ssh root@sc
root@sc's password:
SC02 RH 7.3 (0000009B 02.11.0.1)
[root@sc /]# [user@san1 ddb]$
[user@san1 ddb]$

So my question is why isn't the directory being set to myDirectory and it just exits out of the session?

Answer 1

Your expect script is doing what you are intending but is quitting once the job is send is done.

set some "expectation" like expect "$" at the end of the script and try.

#!/usr/bin/expect -f

spawn ssh root@10.200.2.19
expect "assword:"
send "pass\r"
expect "#"
send  "\r"
send  "pwd\r"
send  "\r"
send  "cd /tmp\r"
send  "touch dummy\r"
expect "$"

Answer 2

You don't need expect for this:

ssh root@host 'cd /tmp; touch afile'

For password-less operation, set up ssh keys. Here's a decent tutorial: http://support.suso.com/supki/SSH_Tutorial_for_Linux