android studio adb Syntax error: ")" unexpected

for 32bit users... Don't update "platform-tools" to version 23.1.

foremost version you can use is 23.0.1 which you can download here

If you are on 64bit machine and having trouble using the latest version of the plateform-tools.. check instructions here.

thanks for the working link- @Tyler

OK. after some research found that reason for this is because

android-sdk-linux/platform-tools content is 32-bit ELF in 23.0.1 but 64-bit ELF in 23.1_rc1 and 23.1.0. So, several functions in android-studio (and I assume eclipse+ADT as well) fail because of the attempt to run 64-bit executables.

This issue has already been raised HERE

Also, as per the official comment given by google project member parts of the platform-tools will support 64 bit Ubuntu OS only from 23.1.0 onwards.

Platform-tools 23.1.0 OR onwards will not work on Ubuntu 32-bit OS. Developer needs to upgrade Ubuntu OS to 64-bit to make it work.

That eventually means we only have possible two workarounds now :

1. Stick with Platform-tool 23.0.1 as of now. and DO NOT UPGRADE platform-tools to 23.1.0 or above

2. Change your Ubuntu OS to 64-bit instead of 32-bit.

I hope this would help someone.

download sdk platform-tool 23.0.1 from this link

As Arnav M. said, for Ubuntu 32bit users, stick to 23.0.1 or install a 64bit Ubuntu. For more details see this:

https://stackoverflow.com/a/34239600/3032209