以sudo用户身份登录时出现问题

Question

这是脚本sample.expect：

#!/usr/bin/expect
spawn ssh -t USER@HOST "sudo su "
expect "USER@HOST's password:"
send "password\r"
expect "$ "
expect "[sudo] password for USER:"
send "password\r"
expect "$ "
puts "USER [exec whoami]"
interact


-bash-4.1$ expect sample.expect`enter code here`
spawn ssh -t USER@HOST sudo su root
FIPS integrity verification test failed.
USER@HOST's password:
[sudo] password for USER: invalid command name "sudo"
    while executing
"sudo"
    invoked from within
"expect "[sudo] password for USER:""
    (file "sample.expect" line 6)
-bash-4.1$

期望以sudo用户身份登录主机。 USER获取问题[sudo]密码：无效命令名称“sudo”执行“sudo”时从“expect”[sudo]密码中调用USER：“”（文件“sample.expect”第6行）。

Answer 1

expect "[sudo] password for USER:"

它使用方括号，这是Tcl的命令替换机制。您必须转义前导括号，或使用Tcl的非插值引号：其中一个

expect "\[sudo] password for USER:"
# or
expect {[sudo] password for USER:}