Tutorial How to Perform Backups and Crontab Scheduling on Linux and Unix

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Lab 0x06 - Linux Backups, Cron, and Scripting • Overview • This lab should expose the student to backups using tar and chronological tables using scripts. Additional investigation into tar, network backup transfer, and encryption are encouraged. • Create your first backup script: • date +%Y%m%d.%H%M • vi sys_backup.sh • #!/bin/bash • Comment/NAME 20200422.2000hrs • Backup script • var_date=`date +%Y%m%d.%H%M` • tar czf /opt/backups/Daily-$var_date.tar.gz /etc /var/www /var/log • chmod 775 sys_backup.sh • ll backups/ • ll • Change the files to their final names: • cp sys_backup.sh sys_backup_weekly.sh • mv sys_backup.sh sys_backup_daily.sh • Change the weekly backup to reflect the proper name: • vi sys_backup_weekly.sh • #!/bin/bash • Comment/NAME 20200422.2000hrs • Backup script • var_date=`date +%Y%m%d.%H%M` • tar czf /opt/backups/Weekly-$var_date.tar.gz /etc /var/www /var/log • Configure the chronological table: • vi /etc/crontab • /etc/crontab: system-wide crontab • Unlike any other crontab you don't have to run the `crontab' • command to install the new version when you edit this file • and files in /etc/cron.d. These files also have username fields, • that none of the other crontabs do. • SHELL=/bin/sh • PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin • m h dom mon dow user command • 17 * * * * root cd / run-parts --report /etc/cron.hourly • 25 6 * * * root test -x /usr/sbin/anacron || ( cd / run-parts --report /etc/cron.daily ) • 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / run-parts --report /etc/cron.weekly ) • 52 6 1 * * root test -x /usr/sbin/anacron || ( cd / run-parts --report /etc/cron.monthly ) • # • 00 00 * * 1-6 root /opt/sys_backup_daily.sh • 00 00 * * 7 root /opt/sys_backup_weekly.sh • #linux #backup #scripting #scriptingtechnique #chmod • • Thank you for dropping by! • Please join me: • / paulwpoteete • / paulwpoteete • / paulwpoteete • • Tutorial: How to Perform Backups and Crontab Scheduling on Linux and Unix • TIMESTAMPS • 00:00 Introduction to Backups • 01:26 Backups • 06:15 Cron • 07:44 Scripting • 11:37 Run • 12:00 Backups Info • 16:35 Conclusion to Backups

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