Category "linux"

Java - Azure Application Insights Dynamic Tracing not working with docker images

Azure Functions has dynamic tracing functionality for Java with App Insights. Where it collects metrics against several libraries. Full list here. As per this,

can we use poll function with unnamed pipes?

I am trying to write a program where i need to monitor ends of unnamed pipe for certain events. Can I use unnamed pipes with poll function? If yes, can you plea

How to check if a file is empty in Bash?

I have a file called diff.txt. I Want to check whether it is empty. I wrote a bash script something like below, but I couldn't get it work. if [ -s diff.txt ] t

Linux: buddy system free memory

Could anyone explain this code? page_idx = page_to_pfn(page) & ((1 << MAX_ORDER) - 1); page_to_pfn() have already return the page_idx, so what does

Is it possible to use "/" in a filename?

I know that this is not something that should ever be done, but is there a way to use the slash character that normally separates directories within a filename

Recursive copy of a specific file type maintaining the file structure in Unix/Linux? [closed]

I need to copy all *.jar files from a directory maintaining the folder structure of the parent directories. How can I do it in UNIX/Linux term

Vim incremental search

I'm using putty on a Linux machine. My usual method for searching in vi is entering the slash /, then my search string, enter, then go through all the matches b

Ubuntu 18.04 Problem Making Certificate Request, string too short

I am currently running Ubuntu 18.04 on Hyper-VM, and I need to run a rack proxy server, I am using ruby 2.2.0 and rails 4.2.11. The first option I found was pra

How do I disable the weird characters from "bracketed paste mode" on the Mac OS X default terminal?

I encountered a problem with my terminal where when I paste text, it is prefixed by 00~ and suffixed with 01~. For example, I will highlight text and push Comm

linux kernel consoleblank argument ignored

I'm running an embedded Linux board with a console only (no graphical environment) based on the i.MX6 and a custom Yocto build. I'm trying to stop the screen f

Linux Kernel Module - Create Directory

I've got a problem about creating a directory within a linux kernel module. What I want: Creating a directory within a kernel module. Here is my actual code:

How to know the process id of current bash session? [duplicate]

I'm on a linux server and admin user. There're many admin users using this machine at the same time. So under current bash command line, how t

Debian 10 MariaDB 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)'

Good evening Community, I am in despair because I cannot install MariaDB on Debian10. There are similar Stackoverflow questions but none of them helped to solv

What do the identifiers PID, PPID, SID, PGID, UID, EUID mean?

I was assigned to Write a C program that prints the following identifiers PID, PPID, SID, PGID, UID, EUID. The assignment then went on to ask What rep

Linux script executing from C++ code with execv fails

I've a very basic Linux script (/home/scripts/script.sh): #!/bin/bash echo 'a' | /bin/netcat -vv 10.10.10.1 3333 echo "done" > /tmp/result When I try to r

Suppressing summary information in `wc -l` output

I use the command wc -l count number of lines in my text files (also i want to sort everything through a pipe), like this: wc -l $directory-path/*.txt | sort -

How to extract value from json contained in a variable using jq in bash

I am writing a bash script which has a json value stored in a variable now i want to extract the values in that json using Jq. The code used is. json_val={"co

Can't open lib 'ODBC Driver 17 for SQL Server' : file not found

I am fairly new to Python and Azure web apps. Any help is appreciated. My setup: Program: Visual Studio code Language: Python-Flask Cloud provider: Microsoft

Test run cron entry

I added a cron job recently, but made a mistake in the path while giving the command and hence, the job never succeeded. Is there some way to test the cron chan

Script file to run in android devices with help of the sh present in adb shell

I am facing a problem in writing a shell script for android devices to be run only on sh present in the device (/system/bin/sh). I have written the following s