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Merge pull request wangdoc#19 from ecator/fix1
fix(loop): fix time units
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docs/loop.md

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@@ -113,7 +113,7 @@ until cp $1 $2; do
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done
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```
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上面例子表示,只要`cp $1 $2`这个命令执行不成功,就5分钟后再尝试一次,直到成功为止。
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上面例子表示,只要`cp $1 $2`这个命令执行不成功,就5秒钟后再尝试一次,直到成功为止。
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`until`循环都可以转为`while`循环,只要把条件设为否定即可。上面这个例子可以改写如下。
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