Category Archives: Linux

Create a filesystem report with Python

In many cases, data accumulates over time, and a lot of this data is not being accessed at all, sometimes for years. Accordingly, it would be great if you could create a report that shows which data, the last access … Continue reading

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Script to count number of logged in users to OpenVPN

To get that information you need to query your openvpn-status.log file, which usually resides in /var/log/openvpn/openvpn-status.log. A normal cat will show the following: OpenVPN CLIENT LIST Updated,Wed Mar 5 11:57:51 2019 Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since someuser,someip:55530,100686479,319036434,Tue Mar 5 … Continue reading

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What to do when ctrl+c not killing your telnet command

To check if ports are open or not, we usually do the following: telnet IP PORT For example: telnet 192.168.100.5 25 Sometimes after seeing your result, you keep pressing ctrl+c, ctrl+x or ctrl+\ to force quit it, but it just … Continue reading

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How to reset display settings for KDE Plasma

In case your display arrangement or settings, e.g. when you have 3 screens and you are for some reason unable to reorganize them or change their settings, just reset your display settings: rm -rf .local/share/kscreen Then just log out and … Continue reading

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How to force resync between PBIS and AD on Linux

In case you made a change on your AD, such as modifying groups or changing attributes of a user, it sometimes take a little while to reflect that on the Linux server that authenticates against AD via PBIS. The best … Continue reading

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