admin

How do I determine which version of VMWare ESX or ESXi I am running?

There are a few different ways to determine which version of VMWare you’re running. VMware Infrastructure Client: From the VIC there are...

wget is a great tool for downloading resources from the Internet. For basic usage, the syntax is is wget http://mysite.com. wget http://mysite.com...

Reviewing Headers If you need to review web server headers, you can use the wget command. wget -S http://www.mysite.com or if you...

Creating Groups Creating groups can be a useful feature so you can grant specific users access to certain files. Let’s say that...

There are a few different ways to convert uppercase letters to lowercase. One way is using the tr command. The example below...

How do I determine how large each tape is in NetBackup? Determining how much data is on each tape is a useful...

How do I determine how many file descriptors are being used on my Linux server? # cat /proc/sys/fs/file-nr 3391 969 52427 |...

On Unix/Linux systems, there is a limit set in the kernel on how many open file descriptors are allowed on the system....

To print the line containing a pattern and 2 lines before it, you can use this grep command: grep -B2 “^Drive” /path/to/my/file...

Have you ever wanted to create a list of the installed RPMs in a format that you can re-use? The RPM command...