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Timing a command's execution in PowerShell
...races for simple commands, for example: "time ls", exactly as you would in Unix.
– Raúl Salinas-Monteagudo
May 22 '19 at 7:18
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How do i find out what all symbols are exported from a shared object?
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Do you have a "shared object" (usually a shared library on AIX), a UNIX shared library, or a Windows DLL? These are all different things, and your question conflates them all :-(
For an AIX shared object, use dump -Tv /path/to/foo.o.
For an ELF shared library, use readelf -Ws /path/to/libf...
Python: What OS am I running on?
What do I need to look at to see whether I'm on Windows or Unix, etc?
25 Answers
25
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C++11 std::threads vs posix threads
...Windows. And of course it is absolutely missing in commercial compilers on UNIXes (Sun Studio on Solaris, HP aCC on HP-UX, IBM vacpp on AIX). Therefore, if your target platform is Linux only - c++11 std::thread is fine; if you also need Windows or other UNIX - boost::thread is the way to go.
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How to find out the number of CPUs using python
...t; 0:
return res
except OSError:
pass
# Other UNIXes (heuristic)
try:
try:
dmesg = open('/var/run/dmesg.boot').read()
except IOError:
dmesgProcess = subprocess.Popen(['dmesg'], stdout=subprocess.PIPE)
dmesg = dmesgP...
How do I execute a command and get the output of the command within C++ using POSIX?
...g...
It seems like nobody does things the hard way any more.
(Assuming a Unix/Linux/Mac environment, or perhaps Windows with a POSIX compatibility layer...)
enum PIPE_FILE_DESCRIPTERS
{
READ_FD = 0,
WRITE_FD = 1
};
enum CONSTANTS
{
BUFFER_SIZE = 100
};
int
main()
{
int parentToCh...
How to call one shell script from another shell script?
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Remember to change format/encoding of executable files in unix if they are created in DOS and then uploaded to unix environment -> dos2unix <script name>
– Abhishek Chatterjee
Feb 5 '14 at 6:19
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App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...实物计算器，给用户一种良好的使用体验。但对于我们的编程过程来说，还是应该从实现最简单的功能入手，先实现常规操作，否则将会迷失在各种不确定之中。一、输入数字（1）设置三个全局变量：前数、后数、算符如第一...
bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...加喜欢用tracepoints探针，因为tracepoints有稳定的应用程序编程接口。注意：现代linux系统(glibc >= 2.26)，open总是调用openat系统调用。
comm是内建变量，代表当前进程的名字。其它类似的变量还有pid和tid，分别表示进程标识和线程标...
Purpose of #!/usr/bin/python3
... figure out what program should be started to interpret the script.
A non Unix based OS will use its own rules for figuring out how to run the script. Windows for example will use the filename extension and the # will cause the first line to be treated as a comment.
If the path to the Python execu...