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write a shell script to ssh to a remote machine and execute commands
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There are multiple remote linux machines, and I need to write a shell script which will execute the same set of commands in each machine. (Including some sudo operations). How can this be done using shell scripting?
You can do this with ...
Connect Java to a MySQL database
... default 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the containing JAR file in the classpath. The vendor-specific JDBC driver is a concrete implementation of the JDBC API (tutorial here).
If you're using an IDE like Eclipse or Netbeans, then you can add it to...
How to configure socket connect timeout
When the Client tries to connect to a disconnected IP address, there is a long timeout over 15 seconds... How can we reduce this timeout? What is the method to configure it?
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How to get execution time in rails console?
...be better to add another answer or comment with reference to the benchmark-ips gem? You've done quite a big edit to the answer there which changes it significantly and rather reduces the appropriateness of the votes on it already.
– Shadwell
Jan 2 '17 at 13:01
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what happens when you type in a URL in browser [closed]
...TPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP server on the other end, and no problems in any step. This is, for most contemporary intents and purposes, an unrealistic scenario; all of these are far more complex in actual use, a...
Why Does OAuth v2 Have Both Access and Refresh Tokens?
...ifies access token validation and makes it easier to scale and support multiple authorization servers. There is a window of time when an access token is valid, but authorization is revoked.
Indeed, in the situation where Resource Server and Authorization Server is the same entity, and where the ...
微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区，为创新赋能！
...能做到“微”，言简意赅，其次这样的限制是考虑到短信更新状态的字数限制，本身是160字母的限制，再留20字给id长度，剩余140字母留给用户发挥。此外，YAHOO!的meme（2,000字）和Google的Buzz（没有限制）等对字数都没有短而精的...
创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...限性。
最后，创建物化视图
在数据库B上创建定时增量更新的物化视图，方法如下：
create materialized view t_mv_test
refresh fast on demand
start with sysdate next sysdate+1/288
as
select * from t_mv_test@dblink_name;
这是增量更新机制的物化视图的...
std::map 插入数据时内部自动排序 - C/C++ - 清泛网 - 专注C/C++及内核技术
std::map 插入数据时内部自动排序map是关联容器，内部结构是树结构，保持了元素有序，使得对内部元素插入和删除操作的复杂度降低。若要想保持和输入顺序一致，可以考虑使用...map是关联容器，内部结构是树结构，保持了元素...
Linux automake自动编译全攻略 - 脚本技术 - 清泛IT社区，为创新赋能！
通过一个简单但经典、全面的例子教大家如何使用automake自动编译自己的工程。
automake通常用于大型工程的自动化编译，我们只需编写Makefile.am，它的规则比直接编写Makefile简单得多（Makefile不熟悉的要好好学习一下），而且也灵...