I have a shell script that is used both on Windows/Cygwin and Mac and Linux. It needs slightly different variables for each versions. How can a shell/bash script detect whether it is running in Cygwin, on a Mac or in Linux? 10 Answers 10
Is there a better way than simply trying to open the file? int exists(const char *fname) { FILE *file; if ((file = fopen(fname, “r”))) { fclose(file); return 1; } return 0; } 8 s 8 Look up the access() function, found in unistd.h. You can replace your function with if( access( fname, F_OK ) == … Read more
A file named stdafx.h is automatically generated when I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don’t/can’t use this header file. What is stdafx.h used for? Is it OK that I just remove this header file? 5 s 5
Is there a cross-platform way to get the current date and time in C++? 26 s 26 In C++ 11 you can use std::chrono::system_clock::now() Example (copied from en.cppreference.com): #include <iostream> #include <chrono> #include <ctime> int main() { auto start = std::chrono::system_clock::now(); // Some computation here auto end = std::chrono::system_clock::now(); std::chrono::duration<double> elapsed_seconds = end-start; std::time_t end_time … Read more
How do I get a platform-dependent newline in Java? I can’t use “\n” everywhere. 9 s 9 Java 7 now has a System.lineSeparator() method.
I tried committing files with CRLF-ending lines, but it failed. I spent a whole work day on my Windows computer trying different strategies and was almost drawn to stop trying to use Git and instead try Mercurial. How to properly handle CRLF line endings? 9 s 9 Almost four years after asking this question, I … Read more
What do I need to look at to see whether I’m on Windows or Unix, etc? 26 s 26 >>> import os >>> os.name ‘posix’ >>> import platform >>> platform.system() ‘Linux’ >>> platform.release() ‘2.6.22-15-generic’ The output of platform.system() is as follows: Linux: Linux Mac: Darwin Windows: Windows See: platform — Access to underlying platform’s identifying … Read more
I need to get the location of the home directory of the current logged-on user. Currently, I’ve been using the following on Linux: os.getenv(“HOME”) However, this does not work on Windows. What is the correct cross-platform way to do this ? 4 s 4
