Wednesday, December 18, 2024

Renew letsencrypt ssl certificate for zimbra 8.8.15

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 Letsencrypt certs usually consists of these files: 1. cert.pem 2. chain.pem 3. fullchain.pem 4. privkey.pem I am not going to discuss about...
Friday, December 6, 2024

Merge pdf files using command line in Linux

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 To merge 2 pdf files for example using command line best using pdfunite. pdfunite file1.pdf file2.pdf output.pdf where output.pdf is the re...
Tuesday, October 3, 2023

Second monitor no display after latest update - KDE-neon

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 After latest update as of Oct 3, 2023, my second monitor was undetected with latest kernel (6.2.0-33-generic). If I boot with previous kern...
Thursday, September 14, 2023

KDE: bluetooth headset battery percentage

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 If you like mine, I can't view my headset's battery percentage in my KDE's bluetooth notification. To be able to see it, I need...
Thursday, September 7, 2023

Installing kde-neon user edition using btrfs for root filesystem

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 If you want to install KDE-Neon using btrfs as / filesystem, there is a bug that preventing it to boot successfully to console or to X or W...
Wednesday, June 14, 2023

How to resize a partition in proxmox 5 or 6

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Background 1. The partition is ordinary partition and not LVM 2. The filesystem is ext4 3. The steps tested on proxmox 5 and 6 and maybe app...
Sunday, April 2, 2023

Install a Sectigo Domain Validation SSL certificate in Zimbra

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We usually get the below four files from Sectigo in the certificate bundle. The file name may vary depending on the certificate type  yourdo...