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how to change JVM memory options in redhat linux

Can anyone help me in changing JVM options in Red Hat Linux, how can i know which default JVM options are being used. let me know the commands please. how to modify JVM options Answer The java version currently in use can be decided with $ java -version Selecting another installed java version : # /sbin/alter…

Ruby: How to REQUIRE an installed GEM programmatically?

First off, I am REALLY new at coding, only CMD 10 years ago and ruby for 5 days now. So I am making my very first script and the only goal for it is for me to test and learn DEF and TRUE/FALSE choices Like like this: or My question: I want my script to check if a particular GEM

Run Galde Gtk3+ Python under Windows

i’ve created a student-managing-software for linux which use different packages (tkmessageboxes, glade-builder, gtk3+). Now, there are a lot of people how asked how it can be used under windows but i’ve no idea. So, does someone know how to use these packages under windows or is it impossible? THX…

Safe global state for signal handling

I am toying around with Rust and various UNIX libraries. A use-case that I have right now is that I want to react to POSIX signals. To keep things reasonable I want to create an abstraction over the signal handling so that the rest of my program doesn’t have to worry about them as much. Let’s call…

Sort file based on information from different file

I have a file (f1) that contains two columns; f1 looks as follows: In a different file (f2), I specify how I would like individuals in f1 to be sorted based on their population; f2 looks as follows: I am looking for the following outcome: Could anyone please give me advice on how to achieve this outcome? Answ…

Debian Startup Script Will Not Start

I was creating a startup BASH script, when I was given an error similar to: So I went and put in some LSB tags, but it still does not start on startup. The script works perfectly if I start it manually It is a very simple script that is intended to startup a PERL script in the same folder (/etc/init.d/fcgiwra…

“Alarm clock” message on linux

I’m working on a project written in C and I’m using alarms. In the beginning of the code I use sigaction() to initialize the alarm: Then I call the alarm with the alarm() function in a loop: The program sends the first alarm and runs the handler function, but when he sends the second one a message…