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Krazyworks | Networking, Systems Design, And Blog
KrazyWorks is a computer services company based in Delaware. We specialize in network design, data storage, system monitoring, and Web development.
2017-03-21 14:54
This is just a quick note for me on pushing SSH keys using sshpass and xargs. The ~/hosts.txt file contains a list of remote hosts, one per line. And the ~/.passwd.txt co… Read More
2017-03-20 19:58
The esxcli utility is used to interface with the vSphere and ESX hosts. It is a useful tool for getting to some basic VMWare functionality from Unix shell. It is also a pre-requisite fo… Read More
2017-03-02 02:25
This is a follow-up to my previous wget notes (1, 2, 3, 4). From time to time I find myself googling wget syntax even though I think I’ve used every option of this excellent… Read More
2017-03-01 23:33
This is probably old news to most of you, but I just found out: Samba v 3.5+ has a new option for flexible mapping of filename characters. Unix filenames allow certain characters that Window… Read More
2017-02-27 19:10
Just a quick short-hand to installing Webmin on CentOS/RHEL. The latest Webmin version comes with a cool new interface theme. You should check it out. [crayon-58b48106a2f3c883251850/] You s… Read More
2017-02-27 05:15
Some time ago I was using PDSH to update root crontab on a bunch of servers and ran into what looked like a PDSH-specific bug. The same command that worked just fine when executed local… Read More
2017-01-27 12:20
Recently I’ve been decommissioning old DNS servers and those things are notoriously hard to get rid of. The problem was that the IP addresses could not be preserved. I needed to track… Read More
2017-01-24 22:51
A quick script to go through your DHCP server log and get a summary of MAC addresses and associated DHCP requests. The script will attempt to download the IEEE OUI list for identifying the m… Read More

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