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How can I check if a command exists in a shell script? [duplicate]
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You can put any of them to your if clause. According to my tests (https://www.topbug.net/blog/2016/10/11/speed-test-check-the-existence-of-a-command-in-bash-and-zsh/), the 1st and 3rd method are recommended in bash and the 5th method is recommended in zsh in terms of speed.
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Accessing dict_keys element by index in Python3
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How do I share IntelliJ Run/Debug configurations between projects?
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Otherwise on StateProvider
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Read-only and non-computed variable properties in Swift
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Resolving ambiguous overload on function pointer and std::function for a lambda using +
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How to create a library project in Android Studio and an application project that uses the library p
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Latest jQuery version on Google's CDN
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由“Pure Virtual Function Called” 考虑到的 - C/C++ - 清泛网 - 专注C/C++及内核技术
...针值赋值
注1：novtable我是从这篇文章里看到的：
http://www.cnblogs.com/chio/archive/2007/09/09/887598.html
注2：我使用的工具为VS2005、OllyDbg。
2．不要在构造函数、析构函数里调用虚函数
根据网络上一些文章的讲解，可能出现“Pure Virtu...
JS以_blank方式打开新窗口方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...能使用window.open，效果没有区别。1、超链接<a href="https://www.tsingfun.com" title="清泛网">Welcome</a>
等效于js代码
window.location.href="https://www.tsingfun.com"; //在同当前窗口中打开窗口
2、超链接<a href="https://www.tsingfun.com" title="清泛网"...