Linux

Generate IP-address ranges using simple bash script

This is just a simple script to generate IP-addresses in a IP-range and write the result output to a file. The script does also remove addresses you would like to exclude from the final output. #!/bin/bash OUTFILE=”mk-iprange.txt” IPRANGE=”192.168.0 192.168.1″ EXCLUDE=”192.168.0.1 192.168.0.2 192.168.1.1″ # Remove old OUTFILE rm -f $OUTFILE # Loop addresses, write to OUTFILE […]

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Scripting

Backup VMware ESXi using BazaarVCB

This post describes how you can backup your VMware ESXi home installation with free license using BazaarVCB if you do not have a vCenter Server available. Bazaarvcb is the fastest backup solution I have used on the free VMware hypervisor. Download the latest version from the download page. The backup script is run by crontab […]

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Linux

Another way to randomize filenames

This post describes an easier way to randomize filenames using the command openssl compared to my previous post named Randomize filenames. #!/bin/bash for filename in *.JPG do mv “$filename” $(echo “$filename” | openssl rand -hex 3).JPG done After running this script the filenames can look something like this 26333c.JPG a8c7a0.JPG b16b22.JPG d69a67.JPG … The rand […]

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Scripting

Create random filenames with random content

I wanted to test filesystem checking on a large XFS filesystem and needed to fill the filesystem. The task was to create files on random with different file size and names placed in different folders. The script I found on the Internet does exactly that #!/bin/bash # Created by Ben Okopnik on Wed Jul 16 […]

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