Commands and Packages
Read guide How to Change Hostname for Ubuntu Machine ?
Recently, we wanted to change the hostname of our Ubuntu machine, Lets, check now what is current … Read more
Learn
Build durable
engineering
understanding
Practical tutorials and deep explanations grounded in reproducible environments, exact versions, and observable results.
Start learning your way
Choose your path
Learn by technology
Explore engineering domains
Learning resources
Supporting knowledge
Fix dpkg and apt Lock Errors SafelyguideScan, Pair, Connect to Bluetooth device from Ubuntu from command line using bluetoothctlguideDisable the Terminal Bell Sound in Ubuntu and GNOME TerminalguideUpgrade Ubuntu Server or Desktop from the Command LineguideCompile JSON-C – JSON implementation in CguideTurn ON and Turn OFF Bluetooth from command lineguideLearning search
Results for “Linux Host, Ubuntu, SysAdmin”
53 results
Existing library
Continue exploring
Bluetooth driver
Read guide Scan, Pair, Connect to Bluetooth device from Ubuntu from command line using bluetoothctl
bluetoothctl is bluetooth control tool which allows us to make the host discoverable, scan other devices, pair to the scanned devices and also connect to those devices using command line utility on ubuntu. Follow below commands for the same.
Linux Host, Ubuntu, SysAdmin
Read guide Keep Ubuntu always updated and clean
You can update Ubuntu as mentioned in our another post “How to update Ubuntu Linux using command … Read more
Backup and Restore
Read guide Mount Google Drive on Ubuntu and Sync Data Using Rsync
To mount Google Drive on Ubuntu Linux and sync local data to a Google Drive folder using … Read more
Errors & Failures
Read guide Fix apt Stuck at 0% Connecting on Ubuntu
When apt pauses at “0% Connecting,” the last displayed address is evidence, not a diagnosis. Determine whether DNS, IPv6 routing, IPv4 routing, a proxy, TLS, a captive portal, the selected mirror, or an unsupported Ubuntu release is failing before changing system-wide address selection.
Audio Driver
Read guide Hear Your Microphone Through Speakers on Linux
Create a temporary audio loopback from a named microphone source to a named speaker or headphone sink using pactl. Start at a conservative volume and latency, save the returned module ID, unload that module to stop monitoring, and control acoustic feedback before turning anything up.
Linux Host, Ubuntu, SysAdmin
Read guide Set a Static IP on Ubuntu Without Losing Access
A stable address is usually safest as a DHCP reservation. When the host itself must own a static address, identify the active renderer, choose an address outside the dynamic pool, validate Netplan syntax, use rollback-capable apply, and verify link, route, DNS, and remote access separately.
Linux Networking
Read guide Inspecting Linux Network Interfaces, MACs, and IP Addresses in Go
Learn how to enumerate network interfaces, inspect MAC addresses, extract IPv4/IPv6 CIDR subnets, and check interface status flags using Go.
Linux Kernel
Read guide Triggering the Linux Kernel OOM Killer Manually to Analyze Process Selection Scores
Learn how to manually trigger the Linux Kernel Out-Of-Memory (OOM) killer via SysRq, inspect /proc/pid/oom_score, and protect critical processes.