How is Btrfs pronounced?

Btrfs is most commonly pronounced "BUTTER F S" (/ˈbʌt ər ɛf ɛs/). Chris Mason / kernel folks: "butter-F-S" (B-Tree File System). Letter-by-letter also common.

Is Btrfs sometimes pronounced "B T R F S"?

Yes — "B T R F S" (/ˌbiː tiː ɑːr ɛf ˈɛs/) is one of the alternate readings in active use.

How to pronounce Btrfs (and the alternate readings)

How to pronounce Btrfs

product contested

BUTTER F S /ˈbʌt ər ɛf ɛs/ mp3

or: B T R F S /ˌbiː tiː ɑːr ɛf ˈɛs/

Btrfs is most commonly pronounced "BUTTER F S" (/ˈbʌt ər ɛf ɛs/). This is one of several readings in active use; the developer community hasn't converged on a single answer.

Chris Mason / kernel folks: "butter-F-S" (B-Tree File System). Letter-by-letter also common.

Alternate readings you might hear:

"B T R F S" /ˌbiː tiː ɑːr ɛf ˈɛs/

Source: Btrfs docs

Pronouncing project and product names correctly avoids the small but persistent friction of being gently corrected during standups, conference Q&As, and team calls. Hearing the word a few times locks in the right reading better than reading IPA ever will. Pronounce is a community-maintained dictionary — every entry tagged with a confidence level and (where possible) a citable source.

Hear it from the command line

$ say-it Btrfs # primary × 3 + audible "or: …" for each alternate

$ say-it --alt Btrfs # focus on the first alternate

$ say-it --all Btrfs # primary AND every alternate, each repeated

$ say-it --solo Btrfs # primary only, no "or: …" tail

$ say-it --why Btrfs # print the dict entry with source URL

Install the CLI: git clone https://github.com/anzy-renlab-ai/pronounce.git && cd pronounce && ./install.sh

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How to pronounce Btrfs

Hear it from the command line

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