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How do I see the extensions loaded by PHP?
...mbers: php -r "phpinfo(INFO_MODULES);" | grep -B 3 -i version > modules.txt
– Agnius Vasiliauskas
Nov 7 '18 at 8:05
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Please explain the exec() function and its family
...the kernel knows about). Doing this you can:
int X = open("./output_file.txt", O_WRONLY);
pid_t fk = fork();
if (!fk) { /* in child */
dup2(X, 1); /* fd 1 is standard output,
so this makes standard out refer to the same file as X */
close(X);
/* I'm using execl he...
What's the best way of scraping data from a website? [closed]
... well behaved bot when crawling websites, and that means respecting robots.txt and not hammering the server with requests. Mistakes or negligence here is very unethical since this can be considered a denial of service attack. The acceptable rate varies depending on who you ask, 1req/s is the max tha...
How can I get the Google cache age of any URL or web page? [closed]
...
wow, it even works around robots.txt; I use it to read blogger since our corporate firewall disabled its URL
– Gabor
Apr 13 '12 at 10:17
2...
How do I do multiple CASE WHEN conditions using SQL Server 2008?
...ay of performing different tests on a single statement
select
case colour_txt
when 'red' then 5
when 'green' then 4
when 'orange' then 3
else 0
end as Pass_Flag
this only works on equality comparisons!
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How to find if directory exists in Python
... os
print(os.path.isdir("/home/el"))
print(os.path.exists("/home/el/myfile.txt"))
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Use grep to report back only line numbers
... second field after the colon, not the first.
grep -n "text to find" file.txt | cut -f2 -d:
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How to get the second column from command output?
...1 c2; do echo $c2; done
or:
while read c1 c2; do echo $c2; done < in.txt
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Microbit 板载引脚 · App Inventor 2 中文网
...一句话生成 App 鸿蒙 · 一套积木，多端原生打包！ 下载 AI2伴侣 · 安卓/鸿蒙/iOS aia 源码商店 中文社区 中文教育版 各版本对比 关于 关于我们 发布日志 服务条款 ...
BLE（四）嗅探工具 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...，可以直接从github：https://github.com/greatscottgadgets/ubertooth下载到最新的发布版。
优点：
售价约120美元，比较亲民本身是一个开源的硬件和软件工程，其设计目的就是用来进行蓝牙网络的嗅探，便于研究员和黑客使用针对不同...