GRIB_FILTER(1)

🦋 NAME 🦋

Okay so bestie, meet grib_filter — that's the manual page for grib_filter, living in section 1 of the manual. Short name section, zero filler, we love that for us. 💅

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🌸 DESCRIPTION 🌸

✨ NAME ✨

grib_filter

💫 DESCRIPTION 💫

So here's the vibe: you take the rules written in rules_file, and you apply them to every single GRIB message inside the GRIB files you passed as arguments. That's the whole job. 🎀

And listen — if you hand it - (a single dash) in the rules_file spot, it reads the rules from standard input instead. Iconic behaviour honestly, fr fr. 🦋

🎀 USAGE 🎀

grib_filter [options] rules_file grib_file grib_file ...

Look at that syntax. Main character energy. 👑

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👑 OPTIONS 👑

Every flag, no skips, no cap:

• -f — Force. Makes the execution not fail when there's an error. It's giving "we push through anyway" 💪
• -o output_file — Your output gets written to output_file. And heads up: if an output file is required but you never reached for -o, the output goes to filter.out instead. Defaults, baby. 📝
• -M — Multi-field support off. This turns off support for multiple fields inside a single GRIB message. Bye multi-field 💀
• -V — Print version. Simple. Blessed. ⭐
• -g — Copy the GTS header. 🫶
• -G — GRIBEX compatibility mode. Old-school mode, we respect the elders. 🌈
• -T T | B | A — Message type! T->GTS, B->BUFR, A->Any (Experimental). The input file gets interpreted according to whichever message type you picked. Note that A is experimental, so treat it accordingly 🙈
• -7 — Does not fail when the message has the wrong length. Kinda forgiving, kinda risky, we move. 💅
• -v — Verbose. Give me all the details bestie, I want the tea. 🍓
• -h — Display this help text and exit. The escape hatch. 🧚

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🔥 SEE ALSO 🔥

Full documentation and examples live at:

https://confluence.ecmwf.int/display/ECC/grib_filter

Go read it, it's good for you 🌸

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okay so genuine talk — this next part is not me being chaotic. The page literally ships its whole self twice. So here's the reprise, same facts, same order, zero new tea. Completionists, this one's for you 💖

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🍓 NAME 🍓 (the reprise)

Still grib_filter. Still the manual page for grib_filter. Still iconic. ✨

🍓 DESCRIPTION 🍓 (the reprise)

NAME

grib_filter — again, yes, we're doing this 🫶

DESCRIPTION

Same rules as before: the rules defined in rules_file get applied to each GRIB message in the GRIB files you listed as arguments. And if rules_file is - (one single dash), the rules get read from standard input. No notes, that's it. 🌈

USAGE

grib_filter [options] rules_file grib_file grib_file ...

OPTIONS (round two, all of them, yes all ten)

• -f — Force. Won't fail on error, we simply proceed. 🔥
• -o output_file — Output goes to output_file; if an output file is required and -o isn't used, it goes to filter.out. Same as before, forever and always. 📝
• -M — Multi-field support off — supports multiple fields in one GRIB message? Not anymore. 💀
• -V — Prints the version. ⭐
• -g — Copies the GTS header. 🫶
• -G — GRIBEX compatibility mode. 🌈
• -T T | B | A — Message type: T->GTS, B->BUFR, A->Any (Experimental). The input file is interpreted according to the message type. 🙈
• -7 — Doesn't fail when the message's length is wrong. 💅
• -v — Verbose. 🍓
• -h — Displays this help text and exits. 🧚

🍓 SEE ALSO 🍓 (the reprise)

Full documentation and examples at:

https://confluence.ecmwf.int/display/ECC/grib_filter

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And that's the whole thing, bestie — this page is grib_filter, dated October 2026, filed under GRIB_FILTER(1) in section 1 of the manual. Go filter some messages. Slay. 👑💖