#!/bin/bash set -e command 1 command 2 ... exit 0 ---------------------------------------------------------- Every script you write should include set -e at the top. This tells bash that it should exit the script if any statement returns a non-true return value. The benefit of using -e is that it prevents errors snowballing into serious issues when they could have been caught earlier. Again, for readability you may want to use set -o errexit.
你寫的每個腳本都應該在文件開頭加上set -e,這句語句告訴bash如果任何語句的執行結果不是true則應該退出。這樣的好處是防止錯誤像滾雪球般變大導致一個致命的錯誤，而這些錯誤本應該在之前就被處理掉。如果要增加可讀性，可以使用set -o errexit，它的作用與set -e相同。