Joseph Zikusooka ~ Zik

A software engineer specializing in open source technologies | Very experienced in building and configuring UNIX/Linux systems and servers. Passionate about developing software applications and hardware for the smart home | Currently serving as the CEO of Jambula Labs and the project leader at JambulaTV, a smart home automation and entertainment platform - https://jambulatv.com | This blog focuses on the following areas: Linux How-Tos and Tutorials ::: IT Security News ::: Free and Libre Open Source Software ::: Smart Home Software ::: Digital Innovations in East Africa https://mastodon.social/@jzik | https://github.com/zikusooka

Month: July 2023

Linux, Python, Security, and Open Source Software TIPS

  • 💡️Find the version of a Linux kernel source tree that you have unpacked#ZikTIPS #CLI #Fedora cd [linux-source-tree]make kernelversion
  • Use the Linux command line to get the number of days left before that all important day e.g. an upcoming conference @fedora @climagic @Linux @debian #ZikTIPS #CLI #Fedora #OpensourceFUTURE_DATE="2024-03-31"; echo $(( ($(date -d $FUTURE_DATE +'%s')-$(date +'%s')) / 86400))NOTE: You can also use it in reverse e.g. calculate number of days you have been on earth
  • 💡Use the Linux command line to calculate the number of days left before that important & upcoming day @fedora #ZikTIPS #CLI #Fedora #LinuxDAY="2024-03-31"; echo $(( ($(date -d $DAY +'%s')-$(date +'%s')) / 86400))
  • In case you missed my talk at the Creative Freedom Summit 2024, you can watch it at:https://www.youtube.com/watch?v=7CyM5fWq7bQ@fedora @fedora_design @jambula #fedora #jambulaTV
  • My presentation at the Creative Freedom Summit is available at:https://www.youtube.com/watch?v=7CyM5fWq7bQ
  • Join me shortly as I present at the Creative Freedom Summit 2024 @fedora @fedora_design @jambula @jambulatv The live stream starts shortly at: https://www.youtube.com/live/Vob6ZmXE68c?si=E4P_P83M6ilAg42LFor an interactive chat, join us at: https://matrix.to/#/#creativefreedom:fedora.im#creativefreedomsummit #fedora #jambulaTV #smarthome
  • It's the 3rd & final day of the Creative Freedom Summit 2024! Join me today as I speak & share my experiences on using Fedora Linux to create a private & locally based smart home hubhttps://sched.co/1Xzv4@fedora @icinga @homeassistant @jambulatv @jambula#creativefreedomsummit#fedora #opensource #JambulaTV #smarthome #privacy #privacymatters
  • It's Day 2 of the Creative Freedom Summit 2024! Don't miss out on great sessions about open source creative tools @fedora @fedora_design The live stream starts shortly at: https://youtube.com/@fedora/streamsFor an interactive chat, join in using element: https://matrix.to/#/#creativefreedom:fedora.im#CreativeFreedomSummit #opensource
  • Also add '-p mpv ….' to use MPV or another video player instead of VLCYou can select different resolutions depending on your bandwidth. Available streams: 144p (worst), 240p, 360p, 480p, 720p (best)
  • 💡Use the Linux command line to launch a live Youtube stream e.g. To watch the on-going @fedora @fedora_design #CreativeFreedomSummit streamlink https://www.youtube.com/watch?v=sUrTAyksmHA best#ZikTIPS #CLI #Fedora
  • The Creative Freedom Summit 2024 starts today! It's all about open source creative tools and why they're important. Watch live at: https://www.youtube.com/@fedora/streamsAnd for the best experience, join in via Fedora Element: https://matrix.to/#/#creativefreedom:fedora.im#CreativeFreedomSummit #opensource
  • 💡In GNOME, quickly open or switch to an application in your Dash using hot keys e.g. Press WIN+1 to switch to the first app, WIN+2 to the second app, etc.. .#ZikTIPS #GNOME #Fedora #Ubuntu
  • I'm excited to attend the Creative Freedom Summit 2024 which begins in 1 day!#creativefreedomsummit #fedora #Linuxhttps://creativefreedomsummit2024.sched.com/directory/speakers @fedora
  • Join me this week at the Creative Freedom Summit 2024 where I will be speaking and sharing my experiences on using Fedora Linux to create a private and locally based smart home hub @fedora @icinga @homeassistant @jambulatv @jambula #creativefreedomsummit#fedora #jambulaTV #smarthome #privacy #privacymatters https://sched.co/1Xzv4
  • I'll be speaking at the Creative Freedom Summit 2024! Join me as I share my experiences using Fedora Linux to create a private & locally based smart home hub@fedora @creativefreedom @jambulatv #creativefreedomsummit #fedora #jambulaTV https://sched.co/1Xzv4
  • 💡See if a service is running on specified port on your Linux system e.g.sudo lsof -n -i:5353NOTE: The option -n inhibits hostname lookups making lsof faster#ZikTIPs #Fedora #Ubuntu #CLI #Opensource
  • Heads up: OpenTofu, the open source software fork of terraform is now available to the general public – Thanks to the stewardship of the Linux Foundation. @linuxfoundation #opentofu #terraform #opensourcehttps://opentofu.org/
  • 💡 Show the configured wireless password in text / QR code format on your Linux system * Useful when sharing your Internet connection with home guests, friends and others#ZikTIPS #WiFi #CLI #Opensource nmcli device wifi show-password
  • 💡Reduce the disk space used by your Linux system logs as follows: #ZikTIPS #Opensourcejournalctl –vacuum-size=100MRemoves the oldest archived journal files until the disk space they use falls below 100MYou can also vacuum based on timejournalctl –vacuum-time=1sIf you prefer rotation of your log files:journalctl –rotate
  • 💡 Are the logs on your Linux system taking up a lot of space? See how much space is used up by the systemd journal as follows #ZikTIPs #systemd #Fedora #CLI #Opensource journalctl –disk-usage
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