Diskless Debian with NBD

A previous post about diskless Debian setup was using NFS. This is an attempt to try network block device. This can solve some problem caused by NFS, for example, running a docker daemon on such a system that uses overlay storage driver, which only supports a few backing file systems.... [more]

Color PCL in macOS

It is quite a surprise that if you have a HP color laser printer, and you’re trying to use the PCL protocol to print, you will only print in black and white. If it is print using PostScript language, you can get the color. There is not an option for... [more]