Shell scripting:

https://developer.apple.com/library/archive/documentation/OpenSource/Conceptual/ShellScripting/shell_scripts/shell_scripts.html https://autellinux.wordpress.com/category/basic/basic-commands-i/ https://unix.stackexchange.com/questions/145182/copy-ssh-public-key-to-multiple-linux-hosts https://stackoverflow.com/questions/13489398/delete-files-older-than-10-days-using-shell-script-in-unix

shell scripts to add users: https://www.cyberciti.biz/tips/howto-write-shell-script-to-add-user.html https://www.thegeekstuff.com/2008/11/3-steps-to-perform-ssh-login-without-password-using-ssh-keygen-ssh-copy-id/

SSH Copy publickkeys:
https://www.ssh.com/ssh/copy-id https://unix.stackexchange.com/questions/145182/copy-ssh-public-key-to-multiple-linux-hosts

Ansible --> roles,vault,tower jenkins --> roles, users, slave configuration, kubernate -->cluster monitoring --> kibana,splunk,promothos,graphana,nagios,zabbix

SSH Copy publickkeys:
https://www.ssh.com/ssh/copy-id https://unix.stackexchange.com/questions/145182/copy-ssh-public-key-to-multiple-linux-hosts

shell scripts to add users: https://www.cyberciti.biz/tips/howto-write-shell-script-to-add-user.html https://www.thegeekstuff.com/2008/11/3-steps-to-perform-ssh-login-without-password-using-ssh-keygen-ssh-copy-id/

Jenkins: https://linuxacademy.com/blog/linux-academy/adding-a-jenkins-agent-node/

Shell scripting: https://developer.apple.com/library/archive/documentation/OpenSource/Conceptual/ShellScripting/shell_scripts/shell_scripts.html https://autellinux.wordpress.com/category/basic/basic-commands-i/ https://unix.stackexchange.com/questions/145182/copy-ssh-public-key-to-multiple-linux-hosts https://stackoverflow.com/questions/13489398/delete-files-older-than-10-days-using-shell-script-in-unix

Zabbix: https://www.linuxtechi.com/install-zabbix-3-0-on-centos-7-rhel-7/

SQL: https://www.digitalocean.com/community/tutorials/how-to-create-and-manage-databases-in-mysql-and-mariadb-on-a-cloud-server

devops project: mithun technologys

instaloader -F --no-captions --no-metadata-json --no-video-thumbnails -a -login mohanmarty :saved 9908725609SN e535ge

memory in percentage: free -t | grep Mem | awk '{printf("Current Memory Utilization is : %.2f%"), $3/$2*100}'