I’m trying to pass a function as argument to another function with void pointer and it doesn’t work I Am getting errors like this: How do I fix the problem? Answer To print a pointer you need the “%p” printf format. But it seems that you don’t actually want to print the actual po…
Tag: linux
smartctl not working from cron job
I have a problem with smartctl Have updated from version 5.4 to the lastest version 6.4.. No change.. Same issue It works fine when running the command smartctl -H /dev/sda directly from the command line But when running the command from a cronjob its not working as it should. Here you can see the cron job se…
How to limit privileged user access at Linux Kernel level?
I found this answer on learning Linux Kernel Programming and my question is more specific for the security features of the Linux Kernel. I want to know how to limit privileged users or process’s access rights to other processes and files in contrast to full access of root. Until now I found: user and gr…
how to determine directory or file in linux in c
I want to print only file names without printing Directory Names. So, I implement this function I checked that Directory names ends with ‘/’ character. So, I checked that if there are ‘/’ character at the end of name, don’t print that name but when I run the function, all of them…
how to compare only date from a model’s datetimefield with current date?
I want to use Model.objects.filter(datetime_lte=datetime.datetime.now.date()) How exactly can I achieve this? I am using django 1.6.5. I want only records of current date. This will give all previous day’s records also Answer You can use the __range field lookup:
ARM: Disabling MMU and updating PC
In short, I would like to shut down all MMU (and cache) operations in a Linux context (from inside the Kernel), for debug purposes, just to run some tests. To be perfectly clear, I don’t intend that my system still be functional after that. About my setup: I’m currently fiddling with a Freescale V…
Java read bytes from Socket on Linux
I’m trying to send a file from my Windows machine to my Raspberry-Pi 2, and I have a client and a server. The client should be able to send a zip file over the network to my server on my linux machine. I know my client and server work on Windows, as when I run both the client and server
The Majority of Unix tools are written in what programming language? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 years ago. Improve this question Here is an example of using two Unix tools: ls and grep are two Unix tools…
MySQL/MariaDB – Reset password without DB restart
unfortunately I forgot to note down the new password from the last recovery. This means I can’t login as root and the init script can’t restart it due to not having been updated (sys_maint). Is there a way for me to fix this, most of the guides I found require you to restart the mysql server, well…
Does Java JVM use pthread?
Does JVM on Mac OS X use pthread to create threads? What about on Linux distributions, is it now default way to create threads for JVM on all distributions? Answer Yes, HotSpot JVM (i.e. Oracle JDK and OpenJDK) uses pthreads on Linux and on Mac OS X.