Monitor periodically linux ordered processes
Task: Monitor processes on the linux instance order by CPU usage Solution Use next command (displays top 15 rows): ps…
Author: Alex
Linux check if server exists by IP and port
Task: Check if server exists by IP and port in the Jenkins Job before connect to it by SSH in…
AWS get list of ec2 ids by beanstalk environment name
Task: Get list of EC2 instances Id(s) by beanstalk environment name Solution: envname=”wp-env” for ec2Id in $(aws elasticbeanstalk describe-environment-resources –environment-name…
Linux: /dev/ttyUSB0: Permission denied
Problem: Can’t connect to the Arduino device. Solution: Run next command(s) under root user: usermod -a -G dialout scalan usermod…
Liquibase: Index.exists exception fix
Task: Fix index exists precondition exception Solution: Instead of using index exists liquibase tag use sql to check index exists.…
Docker: How to copy file from container to local computer
Task: Copy some file from container to local computer Solution: docker cp <container>:<path><filename.ext> <localpath> Example: docker cp nginx:/var/log/mylog.log . Done.
Git: How to compare two branches
Task: Compare two different git branches Solution: git diff branch1 branch2 Note: compare by specific file type git diff branch1…
Windows 10: How to turn off UI animations
Task: Turn off UI animations Solution: Open the Display Settings by pressing the <Windows logo key> + <U>; Under “Simplify…
NetBeans: How to set UI font size
Task: Increase Netbeans UI font size Implementation: Open netbeans.conf file (etc folder) and add “–fontsize 28” to netbeans_default_options value. Example:…
Java Spring app: School registration system
Task: Design and implement simple school registration system Assuming you already have a list of students Assuming you already have…
Kate: Restore last tabs and edited files
Task: Configure Kate editor to restore previous edited session Solution:1. Save current session with some name (Example ‘Default’);2. Configure Preferences->Sessions->Load…
ELK useful commands
Run ELK in docker: Create docker-compose.yml version: ‘2.2’ services: es01: image: docker.elastic.co/elasticsearch/elasticsearch:7.12.1 container_name: es01 environment: – node.name=es01 – cluster.name=es-docker-cluster -…