I noticed that this program: which allocates 3 memories, 3 times and each time frees different memory, frees the memory according to watch free -m, which means that the OS reclaimed the memory for every free regardless of the memory’s position inside the program’s address space. Can I somehow get …
Mount entry in fstab with go
Is there a way to mount a ssh device with Go using an entry in fstab where the mount options are defined. I have been trying syscall.Mount without success. 2018/01/20 11:31:07 operation not permitted exit status 1 A user mount using the fstab entry works fine. sshfs#jeanluc@<remote IP>:/home/jeanluc /ho…
symmetric bandwidth usage mysql
I have 2 servers. Server A is where I have scripts that download html files from websites and then insert those texts into a MySQL server that its on server B. Server B, at least for now, is just for Writing to MySQL, we dont read (select) to that server. Data is downloaded using a PHP Script and another PHP
How to grep recursively and ignore subdirectories of subdirectories?
I am already familiar with grep -r “searchTerm” . and I am familiar with grep -r “searchTerm” exclude={subdir1, subdir2} . However, I am looking for a way to grep recursively, through subdirectories and ignore certain subdirectories of subdirectories. For example, if the directory stru…
Split string in ksh
I got a string as follow : What would be the best way to convert it in seconds without using date ? I tried something like this that sounded pretty nice but no luck : Any idea is welcome, I just can’t use date -d to make conversion as it is not present on the system I am working on.
Purpose and usage of GPIO-Hog declaration
Questions What is the purpose and use-case of the gpio-hog declaration? Can a ‘hogged’ gpio pin be interfaced with from Userspace? If a ‘hogged’ gpio pin cannot be interfaced with from Userspace, then is there any mechanism to configure GPIO pins in the dts file for Userspace interacti…
In Java 8, how do I get my hostname without hard-coding it in my environment?
We just upgraded to Java 8 on Amazon Linux. We are using Spring 4.3.8.RELEASE. It used to be that we could get our machine hostname by setting up beans in our application context file like so … But with Java 8, the bean “hostname” now contains the string Before Java 8, it used to contain the…
Building OpenSSL and LibCURL from sources (Ubuntu) with undefined references
I’m trying to port a .dll project from Windows to Linux and I need to build OpenSSL and cURL STATICALLY. For this, I’ve tried to compile zlib as well but I get some errors I can’t figure out how to solve. I didn’t use sudo except for zlib’s $ sudo make install (since I installed …
How to uninstall RPM without dependencies error in cent os?
I installed the openssl rpm some long days ago. After that i am unable to uninstall the rpm so that i deleted the /usr/bin/openssl folder manually.Though I deleted it manually, when i grep using this command rpm -qa openssl i can find the rpm. But when i execute the openssl command in terminal it is showing b…
Duplicate static variable initialization in C++
I build a shared library “libMyLibrary.so” with a class “MyClass” that contains a static variable of type “MyClass”. Then I build an executable “MyLibraryTest” that I link against “libMyLibrary.so”. The main program uses “dlopen” to load …