shell set -e

shell脚本,set -e方法,可以是脚本遇到异常立即退出,不会继续向下执行。

例如:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
#!/bin/sh
ls /data/ethan
echo r444
#!/bin/sh ls /data/ethan echo r444
#!/bin/sh

ls /data/ethan

echo r444

执行结果为:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
ls: /data/ethan: No such file or directory
r444
ls: /data/ethan: No such file or directory r444
ls: /data/ethan: No such file or directory
r444

而,加上 set -e 命令后:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
#!/bin/sh
set -e
ls /data/ethan
echo r444%
#!/bin/sh set -e ls /data/ethan echo r444%
#!/bin/sh

set -e

ls /data/ethan

echo r444%

执行结果为:

Plain text
Copy to clipboard
Open code in new window
EnlighterJS 3 Syntax Highlighter
ls: /data/ethan: No such file or directory
ls: /data/ethan: No such file or directory
ls: /data/ethan: No such file or directory

可以看出,执行出现异常后,后续代码不会再继续执行

120

0 评论
最新
最旧 最多投票
内联反馈
查看所有评论