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Linux/Unix command to determine if process is running?
I need a platform independent (Linux/Unix|OSX) shell/bash command that will determine if a specific process is running. e.g. mysqld , httpd ...
What is the simplest way/command to do this?
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Threads vs Processes in Linux
I've recently heard a few people say that in Linux, it is almost always better to use processes instead of threads, since Linux is very efficient in handling processes, and because there are so many problems (such as locking) associated with threads. However, I am suspicious, because it seems like ...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
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Where is PATH_MAX defined in Linux?
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Its in linux/limits.h.
#define PATH_MAX 4096 /* # chars in a path name including nul */
#include <linux/limits.h>
char current_path[PATH_MAX];
PATH_MAX has some flaws as mentioned in this blog (thanks paulsm4)
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你以为发传单真的这么简单吗?（提升成功率干货） - 更多技术 - 清泛网 - 专...
...神接触的叠加效果。1436608399451436.png
善用等待时间
软件园东门斑马线的等待时间是错开的，一半红灯时，另一半是绿灯。早上的行人动线基本上是从Ａ点到Ｂ点，就意味着行人总需要在A区和中间C区域等待。
根据停留时间...
OS specific instructions in CMAKE: How to?
...h a common issue, geronto-posting:
if(UNIX AND NOT APPLE)
set(LINUX TRUE)
endif()
# if(NOT LINUX) should work, too, if you need that
if(LINUX)
message(STATUS ">>> Linux")
# linux stuff here
else()
message(STATUS ">>> Not Linux"...
Qt: can't find -lGL error
...dev package
Here is how you could do this:
$ locate libGL
/usr/lib/i386-linux-gnu/mesa/libGL.so.1
/usr/lib/i386-linux-gnu/mesa/libGL.so.1.2.0
/usr/lib/x86_64-linux-gnu/libGLEW.so.1.10
/usr/lib/x86_64-linux-gnu/libGLEW.so.1.10.0
/usr/lib/x86_64-linux-gnu/libGLEWmx.so.1.10
/usr/lib/x86_64-linux-gnu...
App Inventor 2 Ai2 Starter模拟器下载及安装，安卓15新版模拟器 · App Inventor 2 中文网
...卡死、乱码等问题，兼容更多电脑。新版为纯净瘦身版，软件包体积从约 1.5 GB 降至约 1 GB，启动和运行速度显著提升。
新版无需额外安装其他加速组件，Windows 电脑按提示启用 Hyper-V 即可。默认中文环境，内置中文输入法，同...
conflicting types for \'dev_t\'的原因 - 更多技术 - 清泛网 - 专注C/C++及内核技术
conflicting types for 'dev_t'的原因在Linux下编译程序有时会遇到conflicting types for dev_t ，这貌似是一个Linux历史遗留问题，需要调整include头文件的顺序。在Linux下编译程序有时会遇到这种问题，这貌似是一个Linux历史遗留问题:
/usr/in...
Linux上安装dtrace（劝退篇） - 操作系统(内核) - 清泛网 - 专注IT技能提升
Linux上安装dtrace（劝退篇）Linux-dtraceDTrace是Solaris下的产物，Linux上支持的不太好，还是建议不要用了，使用BPF BCC吧。------------为了追踪一下自己写的nginx模块的性能, 加上之前看了agentzh大哥的nginx教程, DTrace是Solaris下的产物，Li...