I tried to use the DNSperf tool that is the benchmark testing tool for an authoritative name server in Linux. This tool has various features to provide the result in many aspects. But I would like to know some options like -c and -q. I tried to observe it from the source code in C. But I don’t get it.
Tag: linux
google-cloud-sdk-app-engine-java with openjdk-11
Is it possible to install app engine sdk over openjdk 11? When I try it I get: $ sudo apt-get install google-cloud-sdk-app-engine-java On my linux distro (Debian testing) openjdk-8-jdk is not available anymore Answer The App Engine SDK component for the Google Cloud SDK is currently not available for Java 11.…
SED Variable contains Dollar Sign
I m having difficulty with sed, a variable contains Dollar Sign like this… I am trying to ‘cleanse’ and outputfile of a password with. I have tried every version of quotes you can imagine. please help. Answer Well, let us suppose you have this file: If you had control over the value of the p…
How to pass parameter of oracle sql script file to sqlplus from shell prompt?
Objective: To invoke sqlplus with sql script file path as parameter from shell prompt Scenario: logged in as root and would like to execute the sql script file as oracle Command: Expected: sql commands in createschema.sql are to be executed Actual: getting only sql prompt Also, tried: a) b) whenever sqlerror …
How could I write an egrep command that will find all entries that have least 5 consecutive vowels (aeiou) in them upper or lower case?
I’m looking for an answer that doesnt include -i option to get both upper and lowercase. Specifically just how to make the regular expression itself output such a string. I also do not want it to return any other strings outside of the consecutive “aeiou”. For example I want to see: aeiou AE…
How SSH Environment Variables works with shell script file?
If I run the command bellow and my install.sh has the following section: cat install.sh | ssh $PRD_USER@$PRD_HOST The $PRD_S3_ACCESS_KEY is going to be resolved from my host or the environment variables from the remote server? Answer Assuming you have gettext installed (which contains envsubst), you can do
remotely determine using ssh IF a machine needs to be rebooted [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago. Improve this question There are plenty of examples of HOW to reboot a linux machine via SSH. However, in my case I…
Concatenate directory and file name in GNU parallel
I have the following directory structure: I would like to convert all .ogg files to .wav with GNU Parallel. Here’s where I got thus far: The problem here is that although obviously directories have different names, the files inside have the same name. The aforementioned command will continuously overwri…
How to get unix style prompt in windows (batch)
I am trying to make dos shell which displayes a unix/linux promt. The code is: I want it to display directory name like in unix/linux but it displays a ~. What is wrong in my code? Can you please help me improve it? Answer Probably not quite on the ball with the prompts specific situational substring modifica…
Execute binary file inside C code (No system())
I am trying to execute a binary executable file inside C code without using system since it has security and resource management issues. The system used here is Debian Buster with kernel 5.4.0-2-amd64 and gcc 9.2.1. I used the method in this question: execute binary machine code from C which is to convert exe…