[ARROW-4537] [CI] Suppress shell warning on travis-ci

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Component/s: Continuous Integration
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/pull/3623
• Assignee: Kenta Murata
• Reporter: Kenta Murata
• Created: 12/Feb/19 09:06
• Updated: 11/Jan/23 07:34
• Resolved: 12/Feb/19 14:27

Description

Suppress shell warnings like:

+'[' == 1 ']'
/home/travis/build/apache/arrow/ci/travis_before_script_cpp.sh: line 81: [: ==: unary operator expected

Issue Links

• links to: GitHub Pull Request #3623