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Get yesterday's date in bash on Linux, DST-safe
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Here a solution that will work with Solaris and AIX as well.
Manipulating the Timezone is possible for changing the clock some hours.
Due to the daylight saving time, 24 hours ago can be today or the day before yesterday.
You are sure that yesterday is 20 or 30 hours ago...
Open a link in browser with java button? [duplicate]
...nix()
{
return OS.contains("nix") || OS.contains("nux") || OS.indexOf("aix") > 0;
}
Then we can call this helper from the instance:
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
MUtils.openURL("www.google.com"); // just what is the...
grep a tab in UNIX
... That's very good for GNU UNIX, but what about POSIX Solaris, AIX and HP-UX? Those don't know anything about -P option.
– rook
Aug 5 '13 at 15:17
22
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How can I redirect the output of the “time” command?
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This worked with AIX when nothing could redirect the output of the "hostent" command. Thank you!
– Hugo
May 1 '15 at 4:04
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Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ix的性能，这些参数都是通过mail.cf配置文件进行配置的，修改以后不要忘了运行postfix reload命令来使配置生效。
1． 进程数限制
可以通过default_process_limit 参数来控制postfix系统同时可以运行的最大进程数目。缺省值是50个。
2．...
Fastest check if row exists in PostgreSQL
...mit it to 1 row. Should perform better. Have a look at edited answer from @aix for that.
– Fabian Barney
Sep 19 '11 at 13:44
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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...放内存。当然，智能指针还不止这些，还包括复制时可以修改源对象等。智能指针根据需求不同，设计也不同（写时复制，赋值即释放对象拥有权限、引用计数等，控制权转移等）。auto_ptr 即是一种常见的智能指针。
智能...
【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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rem 是相对于 html 根元素的字体大小的单位。
我们通过修改 html 中 font-size 的字体大小来控制 rem 的大小。
比如：
html {
font-size: 10px;
}
.box {
width: 10rem;
height: 20rem;
}
当 html 中 font-size: 10px; 时，此时 1rem = 10px，所以 b...
新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...更好地传递实时日志分析的价值。为用户做好服务也不是修改几个配置文件，调优几个程序运行参数就能搞定的。为了提供更好的服务，我们在下面三个方向做了努力：
一、提升服务质量
我们首先做了Elasticsearch优化，Hardware L...
Bash Script : what does #!/bin/bash mean? [duplicate]
...both Ash & Dash have sh compatibility modes. If we delve into Solaris, Aix, HPUX, Ultrix, SCO etc. each will have their own default shell, which will have sh emulation (to remain POSIX compliant.)
– ocodo
Dec 14 '12 at 6:19
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