farinfo(1)

💖 farinfo(1) — the vibe check for your FST archive 💖

okay bestie, so farinfo is a User Commands girlie and she lives in the OpenFst house 🏠✨

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✨ NAME ✨

farinfo — query a finite-state archive 🦋

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🌸 SYNOPSIS 🌸

farinfo [OPTIONS] [in1.far in2.far...]

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🎀 DESCRIPTION 🎀

Prints some basic information about the FSTs in an FST archive. that's it, that's the whole thing, and honestly? she slays at it 💅

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👑 OPTIONS 👑

quick housekeeping first, bestie: Boolean options accept either true or false as a value, or the implicit value true if neither value is specified. so like, she's flexible, periodt ✨

• --begin_key=NAME — Set the first key to list. Default: first key in the archive. iykyk 🌸
• --end_key=NAME — Set the last key to list. Default: last key in the archive. not me picking the whole thing by default 😭
• --fst_align[=BOOLEAN] — Write FST data aligned where appropriate. Default: false.
• --fst_compat_symbols[=BOOLEAN] — Require symbol tables to match when appropriate. Default: true.
• --fst_default_cache_gc[=BOOLEAN] — Enable garbage collection of cache. Default: true.
• --fst_default_cache_gc_limit=N — Set the cache byte size that triggers garbage collection. Default: 1048576.
• --fst_error_fatal[=BOOLEAN] — If true, FST errors are fatal. Otherwise, returned objects are flagged as bad. For example, FSTs are returned with the kError property set to true, and FST weights set so that Member() returns false. Default: true.
• --fst_field_separator=STRING — Set the characters used as a separator between printed fields. Default: " ". (yes that's a whole bunch of spaces, she's valid 🫶)
• --fst_read_mode=STRING — Set the default file reading mode for mappable files, either "read" or "map". Default: "read".
• --fst_verify_properties[=BOOLEAN] — Verify fst properties queried by TestProperties. Default: false.
• --fst_weight_parentheses=STRING — Set the characters enclosing the first weight of a printed composite weight (e.g., pair weight, tuple weight, and derived classes) to ensure proper I/O of nested composite weights. Must have size 0 (none) or 2 (open and close parenthesis). Default: no parentheses.
• --fst_weight_separator=CHARACTER — Set the character separator between printed composite weights. Default: comma.
• --help[=BOOLEAN] — Show usage information. Default: false.
• --helpshort[=BOOLEAN] — Show brief usage information. Default: false.
• --list_fsts[=BOOLEAN] — Display FST information for each key. Default: false. this is the one where she spills ALL the tea 🔥
• --save_relabel_ipairs=FILENAME — Save input relabel pairs to file. Default: do not save.
• --save_relabel_opairs=FILENAME — Save output relabel pairs to file. Default: do not save.
• --tmpdir=PATHNAME — Set the temporary directory to use. Default: /tmp.
• --v[=N] — Set the verbosity level. Default: 0.

ngl --fst_weight_separator=CHARACTER takes a CHARACTER, and --fst_weight_parentheses=STRING must be size 0 or 2 — the original said it, so i'm saying it, no cap 🚫🧢

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🌈 SEE ALSO 🌈

farcompilestrings(1), farcreate(1), farequal(1), farextract(1), farisomorphic(1), farprintstrings(1) — the whole friend group, obsessed 💜

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and that's the page, bestie 🎀 this was OpenFst 1.8.5, dated Mar 2026 (~main character energy~), and honestly? iconic. go query that archive. ate and left no crumbs 💅✨🦋