Computers and information management topics

Favorite monitoring applications and system tools.

bmon - bandwidth monitor and rate estimator. bmon provides a graphical display of transmit and receive volume on a console.

glances - a broad overview of system performance. glances provides CPU, process, IO and network performance indicators in a single console view.

htop - configurable summary of processor, memory and process performance on a console.

A few useful classes to use in Joomla (at least in the Protostar template).

I'm unclear how well any of this works, but for reference some ideas around wifi power control in Linux.

Exchangeable Image File Format (EXIF) is the standard for metadata embedded in a picture file, particularly from smart phone cameras. A few selected tag definitions:

First, create the file to be used. It should be a single block on the drive. This will create a file (swapfile) of size 100 MB as a large block.

dd if=/dev/zero of=/swapfile bs=1024 count=100000

Next, add the newly created file to the swap pool.

mkswap /swapfile

Finally, turn on the new swapfile.

swapon /swapfile

Now you have 100 more Mbytes of swap memory.