I am looking for a way to get the output of a command when it is run from within a C++ program. I have looked at using the system() function, but that will just execute a command. Here’s an example of what I’m looking for: std::string result = system(“./some_command”); I need to run an arbitrary … Read more
Since this post has gotten a lot of attention over the years, I’ve listed the top solutions per platform at the bottom of this post. Original post: I want my node.js server to run in the background, i.e.: when I close my terminal I want my server to keep running. I’ve googled this and came … Read more
How to wait in a bash script for several subprocesses spawned from that script to finish, and then return exit code !=0 when any of the subprocesses ends with code !=0? Simple script: #!/bin/bash for i in `seq 0 9`; do doCalculations $i & done wait The above script will wait for all 10 spawned … Read more
My application runs as a background process on Linux. It is currently started at the command line in a Terminal window. Recently a user was executing the application for a while and it died mysteriously. The text: Killed was on the terminal. This happened two times. I asked if someone at a different Terminal used … Read more
I have been developing an app for 1 or 2 weeks now and just yesterday I have updated my iPhone 5S to the iOS 8 GM. Everything worked fine and I could test on my device as well until I deleted the app from my phone and wanted to build again. The following error appeared: … Read more
How do you measure the memory usage of an application or process in Linux? From the blog article of Understanding memory usage on Linux, ps is not an accurate tool to use for this intent. Why ps is “wrong” Depending on how you look at it, ps is not reporting the real memory usage of … Read more
I am running a program and want to see what its return code is (since it returns different codes based on different errors). I know in Bash I can do this by running echo $? What do I do when using cmd.exe on Windows? 7 s 7
What is the technical difference between a process and a thread? I get the feeling a word like ‘process’ is overused and there are also hardware and software threads. How about light-weight processes in languages like Erlang? Is there a definitive reason to use one term over the other? 3 37
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 3 months ago. Improve this question How do I find (and kill) processes that listen to/use my TCP ports? I’m on macOS. Sometimes, after a … Read more
Assuming that winrar.exe is in the PATH, then Runtime.exec is capable of finding it, if it is not, you will need to supply the fully qualified path to it, for example, assuming winrar.exe is installed in C:/Program Files/WinRAR you would need to use something like… p=r.exec(“C:/Program Files/WinRAR/winrar x h:\\myjar.jar *.* h:\\new”); Personally, I would recommend that you use ProcessBuilder as it has some additional configuration abilities … Read more
