@linuxteck.bsky.socialQuick Linux Tip #85
Q: How do I count new occurrences of an error over time?
Try: `watch -n 5 'grep -c "ERROR" /var/log/nginx/error.log'`
Info: watch tracks metric changes; tail -f | awk counts live log hits.
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@linuxteck.bsky.socialQuick Linux Tip #84
Q: Which system calls is a slow process making the most?
Try: `sudo perf trace -p 3456 --summary`
Info: perf trace --summary aggregates syscall latency with lower overhead than strace.
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@linuxano.bsky.socialLinux says “Wi-Fi connected” but nothing loads? 📶🐧
The culprit could be DNS, DHCP, routing, drivers, firewall rules, a VPN, or a captive portal.
Here’s a step-by-step guide to diagnose and fix the problem without blindly reinstalling Linux:
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@linuxteck.bsky.socialQuick Linux Tip #82
Q: After copying files, timestamps changed. How do I preserve them?
Try: `rsync -a --preserve-times /source/ /destination/`
Info: rsync -a copies exact file timestamps (mtime) and permissions.
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@linuxteck.bsky.socialQuick Linux Tip #81
Q: My server hits 'too many open files' errors. Which process is the culprit?
Try: `sudo lsof | awk '{print $2}' | sort | uniq -c | sort -rn | head -10`
Info: lsof lists open files; grouping by PID counts open handles per process.
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🔧 Bluetooth adapter not detected on Linux?
This 2026 troubleshooting guide covers common causes, Bluetooth services, drivers, USB adapters, kernel issues, and useful commands to get Bluetooth working again.
Read the guide:
techrefreshing.com/linux-blueto...
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@jay52-tx.bsky.socialView and Manage Files using head, tail and cat Commands in #Linux || #LinuxCommands #SysAdmin #LinuxTips bit.ly/4jkQQxl
@masdarx.com📦🐧 **دليل المحترفين لإدارة الحزم في لينكس**: تعرّف على كيفية تثبيت البرامج وتحديثها وإزالتها، وفهم المستودعات والاعتماديات، مع أوامر وتقنيات متقدمة لإدارة الحزم بكفاءة.
@linuxteck.bsky.socialDeprecated Linux Commands: What to Use Instead
www.linuxteck.com/deprecated-l...
Some classic Linux commands are deprecated or no longer recommended. Covers common examples and modern alternatives for networking, DNS, routing, remote access, and more.
@linuxteck.bsky.socialQuick Linux Tip #78
Q: Which network interface is being overloaded?
Try: `sar -n DEV 1 5`
Info: sar -n DEV monitors real-time network traffic per interface.
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@linuxteck.bsky.socialQuick Linux Tip #75
Q: My high-priority process needs dedicated cores. How do I pin it to specific CPUs?
Try: `taskset -cp 0,1 3456`
Info: taskset binds processes to cores via -c and -p (PID).
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Linux graphics drivers not working? 🐧
Learn how to troubleshoot NVIDIA, AMD & Intel GPU problems, black screens, DKMS errors, firmware and Wayland/Xorg issues.
@linuxteck.bsky.socialHow to Find Which Process Uses a Port in Linux
www.linuxteck.com/process-uses...
Port already in use? 🔎 Find the process and PID behind it with ss, lsof, netstat, or fuser.
#Linux #LinuxTips #LinuxCommands #LinuxNetworking #LinuxTeck
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