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acgbox
Asked: 2022-03-18 13:42:39 +0800 CST

如何在 bash 中使用 expect 来自动安装

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我有一个 bash 可以回答freefilesync在安装过程中提出的问题，使用期望：

#!/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

它曾经为我工作。现在我不知道出了什么问题。脚本停在：

ENTER to begin installation:

在此处输入图像描述

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（带/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

我应该在 EOF 中修复什么？谢谢

linux command-line

1 个回答

  1. Best Answer

    根据您的调试日志，expect找不到匹配项，\r\nENTER to begin installation: 因为您在 ( ) 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问题，据说是因为方括号。

    由于没有其他的to begin installation: ，这应该是足够的匹配：

    在我的测试中起作用的是以下修改：

    #!/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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