I add my own favorite: Cheat Sheets on PacketLife.com has some very nice ones on network technology topics. Cheat sheets are in PDF format. You are welcome to use and redistribute them as you please, so long as they remain intact and unmodified. Currently there are six categories: Protocols: BGP, EIGRP, First Hop Redundancy, IEEE … Read more
Another way is to use this command in the batch file: echo exit | sqlplus user/pass@connect @scriptname
Where are the logs? The default location depends on your linux/unix system, but the most common places are /var/log/maillog /var/log/mail.log /var/adm/maillog /var/adm/syslog/mail.log If it’s not there, look up /etc/syslog.conf. You should see something like this mail.* -/var/log/maillog sendmail writes logs to the mail facility of syslog. Therefore, which file it gets written to depends on … Read more
RFC 1035 defines the format of a DNS zone file. … on page 35 you’ll find: @ A free standing @ is used to denote the current origin. This means that @ is a shortcut for the name defined with $ORIGIN. You can find more information on $ORIGIN here, which is an excerpt from Pro … Read more
Congratulations! You’ve come up against a problem that has stumped many a Windows user/admin. No, you cannot rename a task except for exporting, renaming and importing again. Yes, it’s rather silly. Perhaps an enterprising scripter could create a simple PowerShell script that automates this, but until then, you’re stuck with your export/import two-step. Sorry. =( … Read more
The Server Fault community generally can’t help you with capacity planning – the best answer we can offer is “Benchmark your code on hardware similar to what you’ll be using in production, identify any bottlenecks, then determine how much of a workload your current hardware can handle, and/or how much hardware horsepower you need to … Read more
Do you use an incident/ticket tracking system?
Remote Desktop requires TCP port 3389 to be open. Also, opening UDP port 3389 enables acceleration since RDP 8.0. It is possible to change the port used by the terminal server (or PC which is accessed), see this Microsoft support article: How to change the listening port for Remote Desktop. The UDP port for accelerated … Read more
To remove java 1.7 and install java 1.8: sudo yum install java-1.8.0 sudo yum remove java-1.7.0-openjdk
To liken it to a car analogy: A taxi can do over 500,000 kilometers before it needs an engine rebuild. The reason for this is because they are always running, 24/7, and after a car’s engine is up to temperature, the amount of wear it receives while it is running is greatly reduced. A computer … Read more