Category Archives: Linux Commands

Troubleshooting VMware snapshots

By | May 21, 2008

Eric Siebert has writen a very good and explaining guide on how to troubleshoot snapshots on ESX 3.x. Virtualization administrators can use snapshots on VMware ESX to travel back in time and figure out what went wrong with their virtual machines (VMs). But what do you do when your snapshots start acting funny? In this… Read More »

Crontab

By | December 10, 2007

To edit the crontab type (it normally uses vi as editor) crontab -e To add a scheduled type 0 21 * * 1-7 perl /tmp/test.pl To make sure the crontab is updated correctly restart it /etc/init.d/cron restart Explanation 0 Minutes (0-59) 21 Hour (0-23) * Day (1-31) * Month (1-12) 0-7 Weekday (0-7, Sunday =… Read More »