#techtip — Public Fediverse posts

#TechTipThursday

The best time to learn a new Linux tool is when nothing is on fire.
Pick one command you use often and go one level deeper this week.

Already use grep? Try grep -r, grep -v, grep -E.
Already use find? Add -exec to actually do something with the results.
Already use systemctl? Try systemctl list-dependencies.

You don't need a course. You need 20 minutes and a test machine. man is still the best documentation that exists.

#Linux #SysAdmin #LearningLinux #TechTip

#TechTipThursday

The best time to learn a new Linux tool is when nothing is on fire.
Pick one command you use often and go one level deeper this week.

Already use grep? Try grep -r, grep -v, grep -E.
Already use find? Add -exec to actually do something with the results.
Already use systemctl? Try systemctl list-dependencies.

You don't need a course. You need 20 minutes and a test machine. man is still the best documentation that exists.

#Linux #SysAdmin #LearningLinux #TechTip

Need to find a file fast on Linux?

Search by name: find /path -name "filename"
Search by content: grep -r "search term" /path
Find recently modified files: find /path -mtime -1

The file is there. You just have to know how to look.
#TechTipThursday #Linux #SysAdmin #TechTip #OpenSource

Need to find a file fast on Linux?

Search by name: find /path -name "filename"
Search by content: grep -r "search term" /path
Find recently modified files: find /path -mtime -1

The file is there. You just have to know how to look.
#TechTipThursday #Linux #SysAdmin #TechTip #OpenSource

Here are a few simple tips I’ve picked up over my years as a PC nerd. I wrote this before, but it was too long for my Mastodon account, so here it is as an bitmap. Tip: See the ALT text. :)

You’ve probably read these rules somewhere. If not, you’ll find good tips here.

You don’t have to do much to manage passwords... With my tips, anyone else can have or know your passwords, but they’ll be useless. Read why:

#Passwords #CyberSecurity #PasswordManager #SecurityTips #TechTip #KeepItSimple

Here are a few simple tips I’ve picked up over my years as a PC nerd. I wrote this before, but it was too long for my Mastodon account, so here it is as an bitmap. Tip: See the ALT text. :)

You’ve probably read these rules somewhere. If not, you’ll find good tips here.

You don’t have to do much to manage passwords... With my tips, anyone else can have or know your passwords, but they’ll be useless. Read why:

#Passwords #CyberSecurity #PasswordManager #SecurityTips #TechTip #KeepItSimple

Permissions are the backbone of Linux security. Know these cold:

Add a user to a group: usermod -aG groupname username
Check what groups a user belongs to: groups username
Change file ownership: chown user:group filename

"Just chmod 777 it" is not a permissions strategy. It's a cry for help.
#Linux #SysAdmin #Permissions #TechTip #TechTipThursday

Permissions are the backbone of Linux security. Know these cold:

Add a user to a group: usermod -aG groupname username
Check what groups a user belongs to: groups username
Change file ownership: chown user:group filename

"Just chmod 777 it" is not a permissions strategy. It's a cry for help.
#Linux #SysAdmin #Permissions #TechTip #TechTipThursday

Top Tech Tip!

Your ICs will have a higher test pass rate if you test them as what they actually are, rather than what you thought you grabbed.

(No, I didn't just test a bunch of MOSFETs as if they were power-monitoring chips. Shut up. No, *you* smell.)

#hobby #electronics #DIY #TechTip #oops #brainfart

Top Tech Tip!

Your ICs will have a higher test pass rate if you test them as what they actually are, rather than what you thought you grabbed.

(No, I didn't just test a bunch of MOSFETs as if they were power-monitoring chips. Shut up. No, *you* smell.)

#hobby #electronics #DIY #TechTip #oops #brainfart

Package management is one of those things every Linux admin should know cold.

Search for a package: dnf search packagename
Install it: dnf install packagename
Check what's installed: rpm -qa | grep packagename
Remove it cleanly: dnf remove packagename

Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL

Package management is one of those things every Linux admin should know cold.

Search for a package: dnf search packagename
Install it: dnf install packagename
Check what's installed: rpm -qa | grep packagename
Remove it cleanly: dnf remove packagename

Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL

#TechTipThursday
Package management is one of those things every Linux admin should know cold.

Search for a package:
dnf search packagename

Install it:
dnf install packagename

Check what's installed:
rpm -qa | grep packagename

Remove it cleanly:
dnf remove packagename

Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL #RockyLinux

#TechTipThursday
Package management is one of those things every Linux admin should know cold.

Search for a package:
dnf search packagename

Install it:
dnf install packagename

Check what's installed:
rpm -qa | grep packagename

Remove it cleanly:
dnf remove packagename

Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL #RockyLinux

SSH is how you get things done remotely. Know it cold.
Connect to a remote host: ssh user@hostname
Copy files securely: scp file.txt user@hostname:/path/
Generate SSH keys: ssh-keygen -t ed25519

Passwords are fine. Keys are better. Use keys.
#Linux #SysAdmin #SSH #Security #TechTip #TechTipThursday

SSH is how you get things done remotely. Know it cold.
Connect to a remote host: ssh user@hostname
Copy files securely: scp file.txt user@hostname:/path/
Generate SSH keys: ssh-keygen -t ed25519

Passwords are fine. Keys are better. Use keys.
#Linux #SysAdmin #SSH #Security #TechTip #TechTipThursday

#TechTipThursday

Your Linux host is only as secure as you make it.
Check who's logged in right now: who
See open network connections: ss -tulnp

Check for listening services you don't recognize:
systemctl list-units --type=service --state=running

If you can't explain why a service is running, that's your homework.
#Linux #SysAdmin #Security #TechTip

#TechTipThursday

Your Linux host is only as secure as you make it.
Check who's logged in right now: who
See open network connections: ss -tulnp

Check for listening services you don't recognize:
systemctl list-units --type=service --state=running

If you can't explain why a service is running, that's your homework.
#Linux #SysAdmin #Security #TechTip

Lock down user accounts on Linux before something else does.

List failed login attempts: lastb
Lock a user account: usermod -L username
Force a password change at next login: chage -d 0 username

Your servers are being probed right now. Act accordingly.
#Linux #SysAdmin #Security #TechTip

Lock down user accounts on Linux before something else does.

List failed login attempts: lastb
Lock a user account: usermod -L username
Force a password change at next login: chage -d 0 username

Your servers are being probed right now. Act accordingly.
#Linux #SysAdmin #Security #TechTip

#TechTip
I've just seen a IT video saying "I always leave the background as default."
I always change the background & colours to my favourites.

It has a side-benefit: occasionally I have seen a malicious pop-up window trying to get me to do something. It stands out because it's not in my colours

Set a static IP on Linux:
nmcli con mod "connection-name" ipv4.addresses 192.168.1.100/24
nmcli con mod "connection-name" ipv4.gateway 192.168.1.1
nmcli con mod "connection-name" ipv4.method manual
nmcli con up "connection-name"

Because "it gets an IP from DHCP" is fine...until it isn't.
#Linux #SysAdmin #Networking #TechTip #

Set a static IP on Linux:
nmcli con mod "connection-name" ipv4.addresses 192.168.1.100/24
nmcli con mod "connection-name" ipv4.gateway 192.168.1.1
nmcli con mod "connection-name" ipv4.method manual
nmcli con up "connection-name"

Because "it gets an IP from DHCP" is fine...until it isn't.
#Linux #SysAdmin #Networking #TechTip #

Another chapter in my Linux snuppets series #4: Stop filling up your disk with temporary zip files. Here is how to stream a directory directly from one server to another using tar and SSH in a single pipeline.
https://schulz.dk/2026/04/23/linux-snippets-4-the-zero-storage-network-clone/

#linux #tar #cli #terminal #tip #schulz.dk @blog #techtip

Another chapter in my Linux snuppets series #4: Stop filling up your disk with temporary zip files. Here is how to stream a directory directly from one server to another using tar and SSH in a single pipeline.
https://schulz.dk/2026/04/23/linux-snippets-4-the-zero-storage-network-clone/

#linux #tar #cli #terminal #tip #schulz.dk @blog #techtip

Pas op met hulp van AI! 🤖

Vandaag waarschuwt klachteninstituut Kifid: ze krijgen steeds meer klachten die door AI zijn geschreven, maar die staan vol fouten. 🤯

Check dus altijd je bronnen! Vertrouw jij AI voor belangrijke zaken?

#ChatGPT #TechTip

Confused about which Linux distro to try? 🤔 It's not about finding the "best," it's about finding the *right* one for *you*. New video explores how to pick a distro that fits your workflow! Check it out 💻 #Linux #LinuxDistro #TechTip

https://www.youtube.com/watch?v=KIMF8J1a9qw

You DID NOT restart your electronic device… And it's not your fault.

Flea Power Release:
- Shutdown the device.
- Unplug the device or remove the battery.
- Press the power button again.

That will fully shutdown your electronic device.
#Techtip

You DID NOT restart your electronic device… And it's not your fault.

Flea Power Release:
- Shutdown the device.
- Unplug the device or remove the battery.
- Press the power button again.

That will fully shutdown your electronic device.
#Techtip

Bye bye, app-chaos! 👋

Vandaag is de dag! Je kunt nu via WhatsApp berichten sturen naar andere chat-apps. 🤯

Dit is verplicht door nieuwe EU-regels en de eerste koppeling is live. Nooit meer switchen om ál je vrienden te bereiken!

Welke app moet volgens jou als volgende koppelen? 👇

#WhatsAppUpdate #TechTip

Bye bye, app-chaos! 👋

Dankzij nieuwe EU-regels kun je nu via WhatsApp berichten sturen naar andere chat-apps. De eerste koppeling is live! 🤯 Nooit meer switchen om ál je vrienden te bereiken.

Welke app moet volgens jou als volgende koppelen? 👇

#WhatsAppUpdate #TechTip

Got an email from somebody and want to add them to your #Outlook Contacts? One way is to right-click their name and choose "Add to Outlook Contacts". #TechTip

Got an email from somebody and want to add them to your #Outlook Contacts? One way is to right-click their name and choose "Add to Outlook Contacts". #TechTip

#TechTip: If you have an Android Phone with Android 14 or later you probably have a pretty decent USB webcam on your hand. If you connect your phone via USB to a PC you get a popup on your phone and when you tap on it you can select "Webcam" and your phone will be available as a normal USB camera to your system. I confirmed it working on Windows and Linux and depending on the camera in your phone you get a very good picture.

#tech #android #tips #camera

#TechTip: If you have an Android Phone with Android 14 or later you probably have a pretty decent USB webcam on your hand. If you connect your phone via USB to a PC you get a popup on your phone and when you tap on it you can select "Webcam" and your phone will be available as a normal USB camera to your system. I confirmed it working on Windows and Linux and depending on the camera in your phone you get a very good picture.

#tech #android #tips #camera

Giải pháp nghe nhạc cho phần cứng yếu: Jellyfin hay Navidrome?

Một người dùng chạy OMV trên Thin Client cũ (AMD GX-217GA, 8GB RAM) gặp tình trạng lag nghiêm trọng (trễ tới 1 phút khi chuyển bài) khi dùng Jellyfin làm máy chủ nhạc qua ứng dụng Symfonium.

Với cấu hình yếu, Jellyfin thường quá tải. Navidrome được đề xuất như một lựa chọn thay thế tối ưu hơn: nhẹ, nhanh và quản lý thư viện nhạc lớn tốt hơn hẳn trên các thiết bị cấu hình thấp.

#SelfHosted #Navidrome #Jellyfin #MusicServer #TechTip

Giải pháp nghe nhạc cho phần cứng yếu: Jellyfin hay Navidrome?

Một người dùng chạy OMV trên Thin Client cũ (AMD GX-217GA, 8GB RAM) gặp tình trạng lag nghiêm trọng (trễ tới 1 phút khi chuyển bài) khi dùng Jellyfin làm máy chủ nhạc qua ứng dụng Symfonium.

Với cấu hình yếu, Jellyfin thường quá tải. Navidrome được đề xuất như một lựa chọn thay thế tối ưu hơn: nhẹ, nhanh và quản lý thư viện nhạc lớn tốt hơn hẳn trên các thiết bị cấu hình thấp.

#SelfHosted #Navidrome #Jellyfin #MusicServer #TechTip

Ein cleveres Browser-Skript verschlankt Chrome, Edge und Firefox deutlich – weniger Ballast, mehr Speed! 🚀 Perfekt für alle, die ihren Browser aufräumen wollen. Entdecken Sie das Tool jetzt: https://www.golem.de/news/browser-skript-verschlankt-chrome-edge-und-firefox-2601-204280.html #Browser #TechTip #Firefox 💻 #Newz

Ein cleveres Browser-Skript verschlankt Chrome, Edge und Firefox deutlich – weniger Ballast, mehr Speed! 🚀 Perfekt für alle, die ihren Browser aufräumen wollen. Entdecken Sie das Tool jetzt: https://www.golem.de/news/browser-skript-verschlankt-chrome-edge-und-firefox-2601-204280.html #Browser #TechTip #Firefox 💻 #Newz

🔧 Up your game with Cambium Networks! Our step-by-step guide gives you the ultimate WLAN setup, RadSec config, and Hotspot 2.0 integration. #TechTip #WayFiSetup 💻📶 https://wayfiwireless.com/wayfi-setup-guide-cambium-networks

Muốn dùng chung playlist giữa MusicBee trên PC và Jellyfin/Kodi? Vấn đề thường do đường dẫn file khác nhau. Bạn có thể mở file playlist (.m3u) và chỉnh sửa đường dẫn thủ công cho khớp với server. Sau đó playlist sẽ hoạt động trên mọi thiết bị.

#Nhạc #Công nghệ #Mẹo #MusicBee #Jellyfin #Kodi #Playlist #TechTip #SelfHosting

https://www.reddit.com/r/selfhosted/comments/1q8rwi1/looking_for_advice_on_playlists_on_different/

Muốn dùng chung playlist giữa MusicBee trên PC và Jellyfin/Kodi? Vấn đề thường do đường dẫn file khác nhau. Bạn có thể mở file playlist (.m3u) và chỉnh sửa đường dẫn thủ công cho khớp với server. Sau đó playlist sẽ hoạt động trên mọi thiết bị.

#Nhạc #Công nghệ #Mẹo #MusicBee #Jellyfin #Kodi #Playlist #TechTip #SelfHosting

https://www.reddit.com/r/selfhosted/comments/1q8rwi1/looking_for_advice_on_playlists_on_different/

Oeps, zelfs een rector trapt erin! 😬

Vandaag bleek dat de rector van de UGent een door AI verzonnen citaat van Einstein gebruikte in haar speech.

Een goede les: AI kan "hallucineren". Check dus altijd je bronnen! 🤖

Ben jij weleens door AI voor de gek gehouden?

#AI #TechTip

Tiết kiệm data khi cài đặt Raspberry Pi OS! Thay vì tải lại ảnh chỉ để cấu hình Wi-Fi/SSH, bạn có thể dùng công cụ tạo file cloud-init. Chỉ cần tạo file, copy vào boot partition của thẻ SD là xong. Hữu ích cho người có băng thông hạn chế.

#RaspberryPi #cloudinit #TiếtKiệmData #CôngNghe #TechTip #BandwidthSaver

https://dev.to/ktauchathuranga/generate-cloud-init-files-for-raspberry-pi-os-without-re-downloading-images-51go

Tiết kiệm data khi cài đặt Raspberry Pi OS! Thay vì tải lại ảnh chỉ để cấu hình Wi-Fi/SSH, bạn có thể dùng công cụ tạo file cloud-init. Chỉ cần tạo file, copy vào boot partition của thẻ SD là xong. Hữu ích cho người có băng thông hạn chế.

#RaspberryPi #cloudinit #TiếtKiệmData #CôngNghe #TechTip #BandwidthSaver

https://dev.to/ktauchathuranga/generate-cloud-init-files-for-raspberry-pi-os-without-re-downloading-images-51go

🚀 Vedete la differenza sul vostro SSD NVMe post-modifica del registro su Windows? Sperimenterete prestazioni superiori alla velocità della luce! #TechTip #WindowsUpgrade

🔗 https://www.tomshw.it/hardware/windows-trucco-registro-aumenta-ssd-nvme-80-2025-12-23

Vlieg jij ook weleens onder de radar? ✈️

Vandaag blijkt dat militaire vliegtuigen boven Curaçao hun transponders (locatiezenders) moeten gebruiken. Zo zijn ze zichtbaar. 📡

Wist je dat je telefoon dit ook heeft? Met ‘Zoek mijn’ is je smartphone nooit écht kwijt. Super handig! 📍

Heb jij dit aanstaan of vind je privacy belangrijker?

#VindMijnTelefoon #TechTip

🚨 Astuce #SysAdmin ! 🚨

Optimisez vos animations web : apprenez à convertir vos GIFs en MP4 légers et performants avec FFmpeg ! Un guide essentiel pour tout administrateur système sous Linux.

Le contrôle du CRF expliqué pour un équilibre parfait entre qualité et taille.

👉 https://wiki.blablalinux.be/fr/optimisation-gif-mp4-ffmpeg-linux

#Linux #FFmpeg #Optimisation #DevOps #AdminSys #TechTip #LogicielLibre

Just click buttons until things start working.

Oh, and make sure to take notes.

#techtip #it

Remove Extensions you don't recognize. This malware was hidden in a popular extension and wasn't activated for YEARS!!! https://txtechnician.tech/r/7-year-malware

#smallbusiness #techtip
#chrome
#firefox
#edge

Taught about host security last week! Here are a few essentials:
🔒 Default-deny firewalls (ufw or firewalld)
🧰 Disable unneeded services
🖧 Use SSH keys, not passwords
📊 Watch /var/log/secure for odd activity

Host hardening is your first defense, not your last.
What are your goto tools?

#Linux #Security #SysAdmin #TechTip

Account security on Linux starts simple: principle of least privilege.

A few quick checks:
1) Ensure no one logs in directly as root
2) Use sudo with proper group assignments
3) Enforce strong password or key policies
4) Monitor failed logins via /var/log/secure or journalctl

Small habits prevent big breaches, especially in shared environments.
What’s one account security tip you wish you’d learned earlier?

#Linux #SysAdmin #Security #TechTip

#techtip for #it stop landing in the spam folders of Gmail and Outlook accounts.

There are two services that you can set up to help prevent your emails from going to people spam folders.