我有一些脚本可以自动化流程，我希望有关我所处步骤的消息显示在命令窗口中。我有一段代码是：
puts "** Creation of $VMNAME on $HOST begins... **"
spawn ssh -l $USER $HOST
expect_after eof {exit 0}
set timeout 10
expect "(yes/no)?" { send "yes\r" }
expect "password:" { send "$PASSWORD\r" }
expect "~]#" { send "date\r" }
set timeout 1200
puts "** Transferring rhelvm img file to the $HOST... **"
expect "~]#" { send "scp somelink/rhelvm-0-vol.img /storage/iso/\r" }
expect "Password:" { send "$TESTEMSPASS\r" }
puts "** Transferring the VM conf from $TESTEMSUSER to $HOST... **"
expect "~]#" { send "scp somelink/$VMNAME.conf /root\r" }
expect "Password:" { send "$TESTEMSPASS\r" }
puts "** Removing the $VMNAME... **"
expect "~]#" { send "/opt/ccm/bin/vmremove -f /root/$VMNAME.conf --force\r" }
sleep 10
expect "~]#" { send "rm -rf /storage/vmpool/*.img\r" }
sleep 10
puts "** Creating the $VMNAME... **"
expect "~]#" { send "/opt/ccm/bin/vmcreate -f /root/$VMNAME.conf -g /storage/iso/rhelvm-0-vol.img -e\r" }
sleep 10
puts "** Starting the $VMNAME ... **"
expect "~]#" { send "virsh start $VMNAME\r" }
sleep 10
expect "~]#" { send "virsh list --all\r"}
expect "~]#" { send "date\r" }
puts "** Creation of $VMNAME is completed. **"
expect "~]#" { send "exit\r" }
但我在输出中得到的内容并不是按此顺序排列的，例如它显示创建虚拟机的消息，但随后运行 rm -rf /storage/vmpool/*.img 命令。我尝试使用 -nonewline 和 send_user 进行 put，但似乎没有任何效果。请帮我！！
答案1
之后send "cmd\r"，expect 将其发送send<CR>到控制 ssh 进程的伪终端设备的主端。
然后从从机端ssh读取 acmd<LF>并将其发送到远程主机，最终到达远程主机，然后 shell 再次读取它。
远程伪终端设备的 shell 或线路规则发回一个cmd<CR><LF>用于显示（虚拟输入的文本的）的 ，并最终使其返回到用于控制的echo伪终端的主端。expectssh
但仅根据指令expect处理该内容（其输出ssh包括） 。所以在echoexpect
send "cmd\r"
sleep 4
puts "text"
expect "output of ssh" {...}
是text输出前这回声的cmd, 因为那回声仅显示在 上expect。
你可以这样做：
send "cmd\r"
expect "cmd\r\n" # wait for the echo (or just expect "\n")
sleep 4
puts "text"
expect "output of ssh (next prompt)" {...}
首先等待该命令的回显。或者：
send "cmd\r"
sleep 4
expect "output of ssh (next prompt)" {puts "text"; ...}
然后text在下一个提示时显示 。