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如何在 bash 中使用 expect 来自动安装

tag-icon • tag-icon linux command-line bash expect freefilesync
如何在 bash 中使用 expect 来自动安装

我有一个 bash 来回答以下问题免费文件同步安装过程中使用 expect 进行询问：

#!/bin/bash
tar -xf FreeFileSync*.tar.gz
mv FreeFileSync*.run FreeFileSync.run >/dev/null 2>&1
chmod +x FreeFileSync.run

/usr/bin/expect << EOF
set timeout -1
log_user 0
spawn ./FreeFileSync.run --accept-license
log_user 1
expect -exact "\r
ENTER to begin installation: "
send -- "y\r"
expect -exact "https://freefilesync.org/donate\r
\r"
EOF

它曾经对我有用。现在我不知道哪里出了问题。脚本停止在：

ENTER to begin installation:

在此处输入图片描述

我修改了以下几行，但没有得到预期的结果：

expect -exact "\r
ENTER to begin installation: "
send "\r"

或者

expect -exact "\r
ENTER to begin installation: "
send -- "\r"

调试（使用/usr/bin/expect -d）：

expect: does "\u001bc" (spawn_id exp4) match exact string "\r\nENTER to begin installation: "? no

FreeFileSync 11.18 Setup


expect: does "\u001bc\r\n\u001b[32m\u001b[7mFreeFileSync 11.18 Setup\u001b[0m\r\n\r\n" (spawn_id exp4) match exact string "\r\nENTER to begin installation: "? no
 1. Install for all users:    YES (requires root password)
 2. Installation directory:   /opt/FreeFileSync
 3. Create desktop shortcuts: NO
_____________________________
Press a number [1-3] to change settings,
ENTER to begin installation: 
expect: does "\u001bc\r\n\u001b[32m\u001b[7mFreeFileSync 11.18 Setup\u001b[0m\r\n\r\n 1. Install for all users:    \u001b[1mYES (requires root password)\u001b[0m\r\n 2. Installation directory:   \u001b[1m/opt/FreeFileSync\u001b[0m\r\n 3. Create desktop shortcuts: \u001b[1mNO\u001b[0m\r\n_____________________________\r\nPress a number [\u001b[1m1-3\u001b[0m] to change settings,\r\n\u001b[1mENTER\u001b[0m to begin installation: " (spawn_id exp4) match exact string "\r\nENTER to begin installation: "? no

脚本必须回答的问题是：

Accept the FreeFileSync license terms? [y]es, [n]o, or [s]how: [y/n/s] 

FreeFileSync 11.18 Setup

 1. Install for all users:    YES (requires root password)
 2. Installation directory:   /opt/FreeFileSync
 3. Create desktop shortcuts: NO
_____________________________
Press a number [1-3] to change settings,
ENTER to begin installation: 

-> Removing old installation: /opt/FreeFileSync
-> Installing to: /opt/FreeFileSync
-> New console command: freefilesync
-> Registering file extensions: *.ffs_gui, *.ffs_batch, *.ffs_real

All done!
                __
   ,           ," ^`--o
  ((          (  | __,'
   \\~-------' \_;/
   (             /
   /) .______.  )
  (( (      (( (
   ``-'      ``-'

Get the Donation Edition with bonus features and help keep FreeFileSync ad-free.
https://freefilesync.org/donate

我应该修复 EOF 中的哪些内容？谢谢

答案1

根据您的调试日志，expect无法找到匹配项，因为\r\nENTER to begin installation:您在（）中搜索的字符串似乎\r\n\u001b[1mENTER\u001b[0m to begin installation:包含粗体文本（\u001b[1m \u001b[0m）。

我在匹配粗体文本时遇到了问题，据说是因为方括号。

由于没有其他出现to begin installation:，因此应该足以匹配：

在我的测试中，有效的是以下修改：

#!/bin/bash
tar -xf FreeFileSync*.tar.gz
mv FreeFileSync*.run FreeFileSync.run >/dev/null 2>&1
chmod +x FreeFileSync.run

/usr/bin/expect << EOF
set timeout -1
log_user 0
spawn ./FreeFileSync.run --accept-license
log_user 1
expect -exact "to begin installation:"
send -- "y\r"
expect -exact "https://freefilesync.org/donate\r
\r"
EOF

请注意，我只测试了您提供的输出，而不是实际的安装脚本。

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