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No access to /dev/mem. Try running as root

I’m a newbie! I have python files code to turn on the light: i tried here and here and here here on forum i chmod pi for /dev , adduser group file 1 file 2 access GPIO: Error occurs here. “No access to /dev/mem. Try running as root!” i have try here and here and here here on forum and

Java Command Line on Different OS’s

Okay, so I am using process builder to launch an independent java process from the current java process, using the code: to test it, just as a simple questin, will the command always be “java -jar something.jar,” on all operating systems? and if not, what are the formats for mac and linux? Answer …

Grep a line then print awk until a certain substring

My code is But, I want to have $9-$20 be stopped when it hits a value like (0) or (1). This will make my output format and look a lot nicer because anything after (0) or (1) is garbage. Does anyone have an idea on a way to implement that? Input: Output: EDIT: THANK YOU TO ALL THE PEOPLE THAT

saltstack: creating directory only if does not exists

Currently I have the following rule for creating a directory Now I want to create a directory on new minions only if the directory does not exists already. Answer While your example does work, it’s not necessary. file.directory will only attempt to create the directory if it doesn’t exist.

Redirect stdout to a external program in C/C++

I have a program called capture that reads the webcam data and output to the avconv program. Now I have to output to avconv inside my C program. So, instead of output to the stoud: I need to do do something like that: How can I do that? Answer You can use popen() for this purpose. then use fwrite() to