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…
Tag: linux
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…
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.
Install MariaDB on Ubuntu
Task: Install mariaDB server on Ubuntu Implementation: Update packages:sudo apt updatesudo apt upgrade Install MariaDB server package:sudo apt install mariadb-server…
Raspberry Pi Virtual keyboard
Task: Add Virtual (screen) keyboard on Raspberry Pi device Implementation: Install virtual keyboard application Add a Virtual Keyboard Toggle to…
Fix upgrade Jenkins on Ubuntu
While I am updating Jenkins server – see: How to fix: Output: Try to upgrade: Done.
Howto get list of directories and their size in Linux
Task: Get lust of directories and their size Solution: du -sh * With hidden directories: sudo du -sh $(ls -A)…
Howto wait beanstalk environment to be ready
Task: Implement loop to wait till AWS BeansTalk environment will be ready Implementation: #!/bin/bash echo ‘Waiting…’ status=” iterations=0 maxiterations=20 while…
Script to prepare iPod audiobook on ubuntu from mp3 files
Task: create iPod audiobooks on linux (Ubuntu) with tempo = 1.5 Solution: Run this script in the directory with mp3…
Howto setup nginx+Jenkins+SSL+SSH on EC2 ubuntu
Task: Setup Jenkins on EC2 Ubuntu Implementation steps: Update Ubuntu and install nginx: sudo apt updatesudo apt upgradesudo apt install…