Technical Posts
A collection of mostly IT centric posts from the last ~20 years
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Synology DSM missing generate Self Signed Cert – Work-a-round
Just tried to generate a self-signed SSL cert for my Synology DSM and the option is missing Command to generate a self-signed cert to the Synology DSM On WSL or Linux generate a self-signed cert as follows. openssl req -x509 -newkey rsa:4096 -keyout...
Cisco SFP’s found in my IT Junk Drawer
SFP-10-LR-S x 4
Don’t try to book a flight using the Brave Browser on Jetstar.com when Shields are up
Note to self If trying to book a flight on jetstar.com using Brave as your browser remember to turn off Brave Shields or you wont be able to complete the payment section of the checkout Click the Brave Icon Toggle the Shield to DOWN, reload the page, re-enter Credit...
Run a command every 2 minutes Monday to Friday SystemD OnCalendar Snippet in a Specific Timezone
Just tried to check an OnCalendar snippet based on syntax mentioned on another website and it errored out systemd-analyze calendar 'Mon..Fri *-*-* *:*/2:00 Australia/Sydney' Failed to parse calendar specification 'Mon..Fri *-*-* *:*/2:00 Australia/Sydney': Invalid...
Add a SystemD Service to Run as a User at 4:30PM Australia/Sydney time when the server is set to UTC
I have a server set to the UTC time zone. It is running near Sydney and reports are sent to east coast users every day at 4:30PM When I add a cron job I have to convert from Australia/Sydney time and specify the runtime in UTC time. When daylight savings takes effect...
System Time UTC convert a local time to its UTC time
My system time is UTC and I want to convert from localtime Australia/Sydney to UTC date -u -d 'TZ="Australia/Sydney" 4:30PM' # output Tue 14 Oct 2025 05:30:00 UTC Getting the system timezone timedatectl status Local time: Tue 2025-10-14 07:24:24 UTC Universal time:...