Digital Black Hole /dev/null
anything sent to /dev/null will be eaten like a digital black hole ONLY try this on test VM if you […]
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Guides
chattr command – rarely used gem
Cool Command Perform as root set this bit to esnure file cannot be accessed to anyone ;even root # chattr […]
Updating Dell PowerEdge servers via bootable media / ISO
Credit DELL: http://www.dell.com/Support/Article/ca/en/cabsdt1/SLN296511 This article provides information about how to update all the firmware for your Dell PowerEdge servers in […]
Guides
MYSQL – command line determine database size
1. Log in to your account using SSH. 2. mysql -u username -p 3. SELECT table_schema “Data Base Name”, sum( […]
Guides, solaris
Solaris Fibre Channel Commands
To see info on all fc ports: fcinfo hba-port -l To see port status: luxadm -e port Show link errors: […]
How to downgrade kernel and redhat-release to a previous minor version of Red Hat Enterprise Linux
Source: How to downgrade kernel and redhat-release to a previous minor version of Red Hat Enterprise Linux SOLUTION VERIFIED – Updated July […]