HDFView is a Java-based application to view, create, and modify HDF5 files in a tabular format.
HDFView can also make 1-D (line) plots and 2-D (raster) plots of the data in an HDF5 file.
For example data see
Neon.
To view a plot of data, right click on the dataset name and select “Open As” and then set the parameters to view the data.
It’s important to use a recent version of HDFView, as a long-time issue especially with Linux distributions is having old, broken versions of HDFView.
A typical problem with old HDFView versions is that HDFView won’t start.
If using a GUI, the “–shell-escape” option may need to be added.
In TeXmaker / TeXstudio, under “Options → Configure → Commands” add --shell-escape right after the compiler executable.
When using TeXLive, the “tlmgr” program allows installing many LaTeX-related packages.
For example, to enable Tikz diagrams via \usepackage{tikz}, install the “pgf” package:
tlmgr install pgf
Packages can also be added to TeXLive by the GUI TeX Live Manager.
Under Package List select Status: All.
For many years the undocumented macOS command-line utility named “airport” (not to be confused with the Airport Utility app) gives detailed information about the current WiFi connection and nearby WiFi APs.
This utility is made easily available by setting the alias:
On Windows computers when upgrading software or simply having left the computer on for a long time, it may suddenly stop working on common programs with exit code “-1073741819”, corresponding to hex code 0x0005.
This code means “Access denied”, which can happen when another process has changed or locked particular files needed such as libstdc++ or any other binary file.
The simplest and most common fix is to simply reboot the Windows computer, and ensure other programs aren’t auto-loading or locking binary files needed.
The world is full of inexpensive USB charging adapters.
Since the adapters connect to AC mains power, a very large amount of energy is available that can result in damage to the device or even the home / office the charger is in under catastrophic failure.
Since nearly every person in the world needs multiple USB charge adapters, the manufacturers compete aggressively on size and price.
This leads the OEMs to be tempted to cut back on safety and interfere-reducing components.
Ethical and responsible manufacturers find a way to keep the quality and safety circuitry intact, and may even go beyond the chip manufacturer and safety regulator requirements.
These extra measures help protect the charger brand image.
A distinct retailer known for quality USB charger adapters is IKEA.
It’s speculated that since they’re putting their own brand on the charger, IKEA is perhaps taking notable care to ensure the chargers don’t damage devices or the surroundings.
Unix-like shells typically have a syntax that allows running a command with one or more environment variables having values that don’t persist after the command.
For example, in Unix-like shells:
CC=clang CXX=clang++ make
Runs the program “make” with environment variables CC and CXX temporarily set.
Subsequent commands use the original value, if any, of CC and CXX.
In PowerShell this syntax doesn’t directly exist, but can be effected like:
pwsh -c { $env:CC="clang"; $env:CXX="clang++"; make }
YaML is used by GitHub Actions workflow
expressions.
The “if” conditional logic for a task uses comparison operators that also work to compare strings, especially useful for version numbers.
The relevant portion of an
example CI workflow
follows:
On Windows, program faults can cause an modal window to appear regarding reporting the issue to Microsoft.
This window stops automated scripts from further progress.
This is a problem for long-running programs or scripts that call other programs, perhaps on a Task Schedule.
modal Windows popup blocks programs restart
Disable Windows Reporting modal windows on Windows Pro and non-Pro by simply opening “services.msc” and disable “Windows Error Reporting Service”.