大约有 2,500 项符合查询结果（耗时：0.0118秒） [XML]
How can I get the current date and time in UTC or GMT in Java?
... the value within a java.util.Date is the number of milliseconds since the Unix epoch, which occurred at midnight January 1st 1970, UTC. The same epoch could also be described in other time zones, but the traditional description is in terms of UTC. As it's a number of milliseconds since a fixed epoc...
How to delete files older than X hours
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Was hopeful because this old UNIX doesn't have -mmin, but, sadly this is of no help as this old UNIX also does not like fractional values for mtime: find: argument to -mtime must be an integer in the range -2147483647 to 2147483647
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Does PHP have threading?
...ulti-threaded Windows web servers (IIS, Netscape). This does not matter in Unix environments, yet.
– Joe Watkins
Jan 10 '13 at 19:20
6
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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...收到广播包时，协议栈将向上层（也就是应用层，用户可编程）传递广播包。主动扫描，主动扫描除了完成被动扫描的动作外，还会向从机发送一个扫描请求，从机收到该请求时，会再次发送一个称作扫描回应的广播包。
所以...
Server is already running in Rails
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Remove the file: C:/Sites/folder/Pids/Server.pids
Explanation
In UNIX land at least we usually track the process id (pid) in a file like server.pid. I think this is doing the same thing here. That file was probably left over from a crash.
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How can I change my Cygwin home folder after installation?
...User auxiliary class. See also the section called “The cygwin schema”.
unix AD only: The user's home directory is set to the POSIX path given in the unixHomeDirectory attribute from the posixAccount auxiliary class. See also the section called “The unix schema”.
desc The user's home director...
Confused about stdin, stdout and stderr?
...utput of a process running?
It's because they're not normal files. While UNIX presents everything as a file in a file system somewhere, that doesn't make it so at the lowest levels. Most files in the /dev hierarchy are either character or block devices, effectively a device driver. They don't have...
javac : command not found
...y allows to correct at least 6 characters, so I changed something more. On Unix type systems (is CentOS some kind of Unix?) you have to specify ./ to start something in the current directory. Feel free to reedit, if my edits get approved.
– user unknown
Mar 23 ...
Does free(ptr) where ptr is NULL corrupt memory?
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@Tomas: the problem was in things like Version 7 Unix. When I was learning, free(xyz) where xyz == NULL was a recipe for instant disaster on the machine where I learned (ICL Perq running PNX, which was based on Version 7 Unix with some System III extras). But I've not cod...
.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx [duplicate]
...which didn't allow build systems to easily differentiate C++ and C files.
Unix, on which C++ has been developed, has case sensitive file systems. So some used .C for C++ files. Other used .c++, .cc and .cxx. .C and .c++ have the problem that they aren't available on other file systems and their ...