亚行引入bash脚本的奇怪行为
亚行引入bash脚本的奇怪行为
提问于 2014-11-04 23:12:54
我想写一个bash脚本来自动获取WhatsApp的所有备份，但我不明白出了什么问题
#!/bin/bash
adb start-server
for file in $(adb shell ls /sdcard/WhatsApp/Databases)
do
adb pull /sdcard/WhatsApp/Databases/$file
done输出非常奇怪：
$ ./script.sh
' does not existsdcard/WhatsApp/Databases/msgstore-2014-10-28.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-10-29.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-10-30.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-11-01.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-11-02.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-11-03.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore-2014-11-04.1.db.crypt7
' does not existsdcard/WhatsApp/Databases/msgstore.db.crypt7由于"adb shell ls /sdcard/WhatsApp/Databases“工作，将每个文件拖到当前工作目录中没有问题，但正如您所看到的，即使错误消息看起来格式也不太好(‘不existsdcard/WhatsApp...")’)
我尝试了回显"adb拉/sdcard/WhatsApp/Databases/$file“，而不是直接调用亚行，如果我将输出的每一行复制/粘贴到shell中，它就能工作。但是任何其他的尝试都会自动失败。
我觉得如果我忘记了bash脚本的一些基本概念
编辑:在运行它之后
#!/bin/bash -x(感谢Rakesh Gupta的建议)产出如下：
+ adb start-server
++ adb shell ls /sdcard/WhatsApp/Databases
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-10-28.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-10-28.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-10-29.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-10-29.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-10-30.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-10-30.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-11-01.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-11-01.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-11-02.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-11-02.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-11-03.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-11-03.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore-2014-11-04.1.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore-2014-11-04.1.db.crypt7' does not exist
+ for file in '$(adb shell ls /sdcard/WhatsApp/Databases)'
+ adb pull $'/sdcard/WhatsApp/Databases/msgstore.db.crypt7\r' .
remote object '/sdcard/WhatsApp/Databases/msgstore.db.crypt7' does not exist事实上，每个文件名的末尾都有\r字符，可能会导致这种行为。
感谢那个把我和https://stackoverflow.com/tags/bash/info联系起来的家伙，加上"tr -d '\r'"，这个脚本运行得很好
#!/bin/bash
adb start-server
for file in $(adb shell ls /sdcard/WhatsApp/Databases | tr -d '\r')
do
adb pull /sdcard/WhatsApp/Databases/$file .
done回答 1
Stack Overflow用户
回答已采纳
发布于 2014-11-04 23:24:56
在你的剧本里可能有一个特殊的角色。尝试在脚本上运行dos2unix。另外，尝试按下面的方式添加-n以检查语法
#!/bin/bash -n并运行脚本以标识语法方面的任何问题。
你也可以试试
#!/bin/bash -x 启用调试模式
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/26746853
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