如何避免shell脚本失败退出的特定命令

Question

下面的脚本与-e选项运行，所以如果在它的命令失败，那么将退出：

#!/bin/sh -e 
command1 #script should fail if command1 fails 
command2 #script should NOT fail if command2 fails 
command3 #script should fail if command3 fails 

我怎样才能使脚本不是在command2上失败？

Answer 1

command1 
command2 || true 
command3 

Answer 2

可以根据实际需要可以关闭该设置：

#!/bin/sh 
set -e 

command1 #script should fail if command1 fails 

set +e 
command2 #script should NOT fail if command2 fails 
set -e 

command3 #script should fail if command3 fails