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Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...enter_app_singleton() {
int fd = open(kPidFileName, O_RDWR | O_TRUNC);
if (fd == -1) {
//对应的锁文件当前不存在，试图创建该锁文件
fd = creat(kPidFileName, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
if (fd > 0) {
fchmod(fd, S_IRUSR|S_IRUSR|S_IWUSR|S_IRGRP|S...
How to send data to local clipboard from a remote SSH session
...me kind of solution, and I've found one that works for me. It's a minor modification to a suggestion from OSX Daily.
In my case, I use Terminal on my local OSX machine to connect to a linux server via SSH. Like the OP, I wanted to be able to transfer small bits of text from terminal to my local cli...
JavaScript equivalent of jQuery's extend method
...e rest of the code within the function. In order to prevent having to specify all of the settings within the config object, I use jQuery's extend method to fill in a new object, settings with any default values from the default object if they weren't specified in the config object:
...
What's the best strategy for unit-testing database-driven applications?
...ually used your first approach with quite some success, but in a slightly different ways that I think would solve some of your problems:
Keep the entire schema and scripts for creating it in source control so that anyone can create the current database schema after a check out. In addition, keep s...
How to create a directory using Ansible
...
You want the file module. To create a directory, you need to specify the option state=directory :
- name: Creates directory
file:
path: /src/www
state: directory
You can see other options at http://docs.ansible.com/file_module.html
...
How do I use LINQ Contains(string[]) instead of Contains(string)
...tring> from string[] first. Actually a List<int> would be better if uid is also int. List<T> supports Contains(). Doing uid.ToString().Contains(string[]) would imply that the uid as a string contains all of the values of the array as a substring??? Even if you did write the exten...
Is a DIV inside a TD a bad idea?
...ople never use tables for layout though, and I happen to be one of them.)
If you use a div in a td you will however get in a situation where it might be hard to predict how the elements will be sized. The default for a div is to determine its width from its parent, and the default for a table cell ...
Single vs Double quotes (' vs ")
...rendered HTML which always uses double quotes. This allows me to determine if the HTML was written by hand or generated. Is this a good idea?
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SublimeText encloses lines in white rectangles
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control + shift + p or cmd + shift + p and type sublimelinter and click the one with disable
– Sarmen B.
Apr 11 '13 at 18:41
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How to prevent going back to the previous activity?
When the BACK button is pressed on the phone, I want to prevent a specific activity from returning to its previous one.
13 ...