A tool that can recover deleted files from SD cards:
The GUI is a bit special for most users but very ok if you feel familiar with shell windows. Quite conveniant. And most important - it recovered more files than Recuva.
Also provides a reverse SLA uptime percentage calculation base on downtime duration
Nice step by step guide to identify on which layer do you have an issue : Physical, Data Link, Network/Internet or Transport?
This blog post explains how computers running the Linux kernel receive packets, as well as how to monitor and tune each component of the networking stack as packets flow from the network toward userland programs.
Script to install Datalogics PDF Checker CLI on a Linux system:
curl https://raw.githubusercontent.com/Lucas-C/dotfiles_and_notes/master/bin/install-pdfchecker.sh | bash
PDF_Checker/pdfchecker --profile PDF_Checker/CheckerProfiles/everything.json --input $pdf
The USE Method provides a strategy for performing a complete check of system health, identifying common bottlenecks and errors. For each system resource, metrics for utilization, saturation and errors are identified and checked. Any issues discovered are then investigated using further strategies.
This is an example USE-based metric list for Linux operating systems (eg, Ubuntu, CentOS, Fedora). This is primarily intended for system administrators of the physical systems, who are using command line tools. Some of these metrics can be found in remote monitoring tools.
Linux load averages are "system load averages" that show the running thread (task) demand on the system as an average number of running plus waiting threads.
VIA: http://taint.org
The thing I learned last week that helped me really understand was – you can split linux tracing systems into
- data sources (where the tracing data comes from)
- mechanisms for collecting data for those sources (like “ftrace”)
- tracing frontends (the tool you actually interact with to collect/analyse data)
Confusing corners of the unix utilities
shpec - Test your shell scripts!
Comparing cloud storage performance with a real-time spectrogram built on sysdig
A smart and user-friendly command line shell
Applications of Weboob