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node.js remove file
...o check files can be deleted or not, Use fs.access instead
fs.access('/etc/passwd', fs.constants.R_OK | fs.constants.W_OK, (err) => {
console.log(err ? 'no access!' : 'can read/write');
});
share
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How to capture no file for fs.readFileSync()?
...tead pass the error in the callback and handle it there: fs.readFile('/etc/passwd', (err, data) => { if (err) throw err; console.log(data); }); from: nodejs.org/dist/latest-v12.x/docs/api/…
– K.H. B
Mar 30 at 16:44
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...采用这种方案。
直接用python或curl命令测试下来，是一点问题都没有，就 App Inventor 2 搞不定，只能说ai2可发挥空间有限，默认采用了trunked协议，无法指定HTTP1.0，设置请求标头也修改不了，百度网盘把这个拦住了，直接上传百度...
笨法玩电商网站秒杀 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...跟不上，程序就会堆积大量连接，这可能会引起很多连锁问题：一方面可能导致内存不足，以PHP为例，一个连接通常占用10M左右，堆积一千个连接的话，10G内存就没有了；另一方面大量的连接可能耗尽端口资源，具体取决于内核...
【phpcms v9】html静态化设置及URL规则优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...成html的时候，将会显示成：news china 1000 html。这个有点小问题，
1、默认的栏目生成规则是：
{$categorydir}{$catdir}/index.html|{$categorydir}{$catdir}/{$page}.html
具体生成html的时候，将会显示成：news/china/1000.html。
这个有点小问题...
Having Django serve downloadable files
...t the user can potentially download any file (ie. what if you pass "f=/etc/passwd" ?) There are a lot of things that help prevent this (user permissions, etc), but just be aware of this obvious but common security risk. It's basically just a subset of validating input: If you pass in a filename to...
Android应用内存泄露分析、改善经验总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...可以梳理总结出来作为分享。
原则
  对于性能问题，分析和改善有必要遵循以下原则：
一切看数据说话，不能跟着感觉走，感觉哪有问题就去改，很有可能会适得其反；
性能优化是一个持续的过程，需要不断...
How to send a correct authorization header for basic authentication
...
You can include the user and password as part of the URL:
http://user:passwd@www.server.com/index.html
see this URL, for more
HTTP Basic Authentication credentials passed in URL and encryption
of course, you'll need the username password, it's not 'Basic hashstring.
hope this helps...
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What does $$ mean in the shell?
... as root and I create /tmp/yourprogname13395 as a symlink pointing to /etc/passwd -- and you write into it.
This is a bad thing to be doing in a shell script. If you're going to use a temporary file for something, you ought to be using a better language which will at least let you add the "exclusiv...
Sublime Text 3能用支持的插件推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...后台运行检查机制造成sublime text 3有点小卡顿，虽然部分问题可以设置sublimeLinter来解决，用了sublimeLinter一小段时间后还是放弃了，觉得代码提示对我应该没必要了。
插件下载：https://github.com/SublimeLinter/SublimeLinter/tree/sublime-text...