如何读取 expect 的 output 到一个变量？

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This topic created in 3135 days ago, the information mentioned may be changed or developed.

我在脚本里用 expect ssh 到机器上执行命令，比如 ls，如何把这个结果拿回来在脚本里使用？

expect -c "
    spawn  ssh -f -o StrictHostKeyChecking=no [email protected] ls
    expect {
        \"*assword\" {set timeout 6000; send \"123456\`\n\"; exp_continue ; sleep 30; }
        \"yes/no\" {send \"yes\n\"; exp_continue;}

        }
    interact"

搜了半天没整明白

4 replies • 2020-09-07 15:20:24 +08:00

araraloren

Nov 8, 2017

ssh 应该可以获取执行的程序的返回值

try this: echo $(ssh -f -o StrictHostKeyChecking=no [email protected] ls)

crytis

Nov 8, 2017

@araraloren 但是我要用 expect 输入密码

dongrenwen

Sep 7, 2020

ret=$(
expect -c "
spawn ssh -f -o StrictHostKeyChecking=no [email protected] ls
expect {
\"*assword\" {set timeout 6000; send \"123456\`\n\"; exp_continue ; sleep 30; }
\"yes/no\" {send \"yes\n\"; exp_continue;}

}
interact"
)

cat <<EOF
${ret}
EOF

dongrenwen

Sep 7, 2020

```bash
ret=$(
expect -c "
spawn ssh -f -o StrictHostKeyChecking=no [email protected] ls
expect {
\"*assword\" {set timeout 6000; send \"123456\`\n\"; exp_continue ; sleep 30; }
\"yes/no\" {send \"yes\n\"; exp_continue;}

}
interact"
)

cat <<EOF
${ret}
EOF
```