You'll Find Red Hat, Debian, and Ubuntu all over - depending on the needs/wants of the shop. General familiarity is good, but there's no harm in specializing.

You'll Find Red Hat, Debian, and Ubuntu all over - depending on the needs/wants of the shop. General familiarity is good, but there's no harm in specializing. Just realize that outside of package management (and some quirks that allows), Linux is Linux. Distributions are all made of roughly the same pieces, they vary slightly in how/where they place them For example, the things here tend to hold true - being one of many standards: https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html