I am unable to resolve host names when one(3g-cell) of my two interfaces is turned on. One interface is WAN(Ethernet), while the other is 3g-Cell. When WAN is turned off, I tried to do manual curl request and I was able to do it using 3g-cell interface, but was unable to do that using hostname. (same happened…
Tag: linux
Exporting functions from an executable using a def file
There is plenty of information available about how to export functions from a dll (which I’ve done many times), but I heard that it’s also possible to export functions from an executable, so that an external dll can call them. Although I’ve managed to get this working, it seems as though the…
How can I edit an xml line from user data in ec2 instance?
I am using Wowza streaming engines in multiple ec2 instances that are spinned up from backend. I need a way of linking the edge instances with the origin and for that I need to update the value of a particular line in an xml file. I have the ip loaded in the user-data by the time the edges spin up.
Apache 2.4.23 undefined reference to CRYPTO_malloc_init?
Hi I am trying to install Apache 2.4.23 with openssl version of 1.1.0c , while execute make command I am getting following error, I have searched many website but I couldn’t see any relevant answer. I have attached error also .Could you please solve my problem? Thanks in Advance Answer Apache 2.4.23 und…
U-boot to load two images on separate cores
I have NXP/Free-scale Imx6 sabre lite development board. My task is to flash two OS kernels (Linux and RTOS)in such a way that linux runs on core0 and RTOS on core1. I have 1GB DDR3 in which i have to allocate first 128MB for RTOS and rest for LINUX image. How to configure U-boot in this case? core-0 should l…
boost timed_wait doesn’t wait if date is in 2116 year
The example: It works perfectly on Linux at the time – the timed_wait waits for 10 seconds and then returns false. However if I move the system date to 2116 year and re-run the app, the timed_wait call returns false immediately. There is the same problem with the boost’s condition vars. Could plea…
How to run multiple Go lang http Servers at the same time and test them using command line?
EDIT: My aim was to run multiple Go HTTP Servers at the same time. I was facing some issues while accessing the Go HTTP server running on multiple ports while using Nginx reverse proxy. Finally, this is the code that I used to run multiple servers. Few newbie mistakes I was making: ping http://localhost:9000 …
adb from Android Studio and terminal are not usable simultanously
I’m using Linux Mint and I have an annoying problem with my adb: I can use adb either from Android Studio (Android Monitor) or in terminal, but not both at the same time. Even the Android Studio Terminal found no devices if Android Monitor in Android Studio was running. The workaround is to exit Android…
Unable to print usernames longer than 8 chars with “w” in linux
I am doing a linux script to extract which users are logged onto a machine, from where, and how long they have been idle. So far I have been using the “w” command in linux. However I now noticed that it truncates usernames and source I have three users logged on testuser testuser-new lala-testuser…
Use linux perf utility to report counters every second like vmstat
There is perf command-linux utility in Linux to access hardware performance-monitoring counters, it works using perf_events kernel subsystems. perf itself has basically two modes: perf record/perf top to record sampling profile (the sample is for example every 100000th cpu clock cycle or executed command), an…