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Category: Tips & Tricks

Wifi not working – Failed to run INIT ucode: -110

- September 5, 2023 - ServerAdmin

From time to time, my Thinkpad T460s starts without working WiFi. Like the WiFi card doesn’t exist. Since I was always in a rush, the easiest solution was to reboot …

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Deprecated TLS and ERR_SSL_VERSION_OR_CIPHER_MISMATCH error

- June 8, 2023 | June 9, 2023 - ServerAdmin

If you maintain an old telco devices which don’t support TLS 1.2 or 1.3, you probably won’t be able to do it until you enable deprecated TLS. For Firefox: in …

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Mint 21 – wrong mouse theme

- April 6, 2023 - ServerAdmin

The default theme for the mouse pointer in Linux Mint 21.1 is Bibata Modern Classic and I don’t like it. No problem. It can be easily replaced with another one …

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Simple PHP CURL method

- March 10, 2023 | March 13, 2023 - ServerAdmin

Here is a simple PHP method for consuming a different APIs As you can see, the method supports cookies, XML requests, basic HTTP Auth, etc…. Leave a comment if you …

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Nothing provides perl(IPC::Run) needed by…

- March 5, 2023 | March 6, 2023 - ServerAdmin

I wanted to update Postgresql 13 on my Rocky8 test server Simple dnf update postgresql13dnf update postgresql13 leaded to the next error Problem 1: cannot install the best update candidate …

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How to check the DNS server IP being used (Ubuntu 18.04+)

- December 22, 2022 | December 22, 2022 - ServerAdmin

If you’re using Ubuntu 18.04+ (or distro based on Ubuntu 18.04) and you would like to know which DNS servers are responsible for your connection, you can try the next …

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Email alert for SSH logins

- November 22, 2022 | November 22, 2022 - ServerAdmin

It is good idea to get notified when someone logs into your Linux server. First be sure that your server is able to send email (at least Postfix + valid …

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Simple pushtogit script

- June 24, 2022 | June 24, 2022 - ServerAdmin

Create new file and add the next lines inside (for example pushtogit.sh)   #!/bin/bash echo " ====================== running command from" $PWD cd $PWD git add . echo -n " ====================== …

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rsync tutorial

- January 19, 2018 | January 19, 2023 - ServerAdmin

Rsync is a command-line utility commonly used to copy files and folders from one location to another while preserving file attributes (permissions, ownership). In other words, it is used to …

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There is no suitable CSPRNG installed on your system

- March 3, 2017 - ServerAdmin

Some PHP packages may stop working after update with error message: “There is no suitable CSPRNG installed on your system”. The reason for this that they stopped using OpenSSL and …

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