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Best way to parse command-line parameters? [closed]

...ing a List). Note also that this approach allows for concatenation of multiple command line arguments - even more than two! share | improve this answer | follow ...
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'

...the mysql server. If you do not have mysql server installed on the address/IP address you mentioned with '-h', the above error will pop up. This is because it is not able to connect to MySQL server through the socket mysql.sock 2) If Mysql-server is already installed, it should be running.If it's no...
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How do you sign a Certificate Signing Request with your Certification Authority?

...cConstraints = CA:FALSE keyUsage = digitalSignature, keyEncipherment subjectAltName = @alternate_names nsComment = "OpenSSL Generated Certificate" #################################################################### [ alternate_names ] DNS.1 = example.com DNS.2 =...
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How to validate an email address using a regular expression?

... that validates MOST email addresses correctly, assuming they don't use an IP address as the server part. 75 Answers ...
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Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...作有命令与工具标准(POSIX.2)、测试方法标准(POSIX.3)、实时API(POSIX.4)等。到了1990 年上半年已经有25 个计划在进行,并且有16 个工作组参与了进来。与此同时,还有一些组织也在制定类似的标准,如X/Open,AT&T,OSF 等。  ...
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Is there a way to make npm install (the command) to work behind proxy?

...y http://username:password@cacheaddress.com.br:80 install packagename Skip the username:password part if proxy doesn't require you to authenticate EDIT: A friend of mine just pointed out that you may get NPM to work behind a proxy by setting BOTH HTTP_PROXY and HTTPS_PROXY environment variables,...
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TCP 的那些事儿(下) - 更多技术 - 清泛网 - 专注C/C++及内核技术

...能动态地设置。 为了动态地设置,TCP引入了RTT——Round Trip Time,也就是一个数据包从发出去到回来的时间。这样发送端就大约知道需要多少的时间,从而可以方便地设置Timeout——RTO(Retransmission TimeOut),以让我们的重传机制更...
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How to use cURL to get jSON data and decode the data?

... You can Use this for Curl: function fakeip() { return long2ip( mt_rand(0, 65537) * mt_rand(0, 65535) ); } function getdata($url,$args=false) { global $session; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,$url); curl_setopt($ch...
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Java current machine name and logged in user?

...he Java API says that getHostName() will return the host name for this IP address, or if the operation is not allowed by the security check, the textual representation of the IP address. share | ...
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Test if remote TCP port is open from a shell script

...ing if a given TCP port is open on a remote server, from inside a Shell script. 16 Answers ...