$ fq exitcode: 2 stderr: Usage: fq [OPTIONS] [--] [EXPR] [FILE...] $ fq -h fq - jq for binary formats Tool, language and decoders for working with binary data. For more information see https://github.com/wader/fq Usage: fq [OPTIONS] [--] [EXPR] [FILE...] Example usages: fq . file fq d file fq tovalue file fq -r totoml file.yml fq -s -d html 'map(.html.head.title?)' *.html cat file.cbor | fq -d cbor torepr fq 'grep("^main$") | parent' /bin/ls fq -r 'grep_by(.protocol=="icmp").source_ip | tovalue' *.pcap fq -i --arg NAME VALUE Set variable $NAME to string VALUE --argdecode NAME PATH Set variable $NAME to decode of PATH --argjson NAME JSON Set variable $NAME to JSON --color-output,-C Force color output --compact-output,-c Compact output --decode,-d NAME Decode format (probe) --from-file,-f PATH Read EXPR from file --help,-h [TOPIC] Show help for TOPIC (ex: --help, --help formats) --include-path,-L PATH Include search path --join-output,-j No newline between outputs --monochrome-output,-M Force monochrome output --null-input,-n Null input (use input and inputs functions to read) --null-output,-0 Null byte between outputs --option,-o KEY=VALUE Set option (ex: -o color=true, see --help options) --raw-file NAME PATH Set variable $NAME to string content of file --raw-input,-R Read raw input strings (don't decode) --raw-output,-r Raw string output (without quotes) --repl,-i Interactive REPL --slurp,-s Slurp all inputs into an array or string (-Rs) --unicode-output,-U Force unicode output --version,-v Show version $ fq -i null> ^D $ fq -i . test.mp3 mp3> ^D $ fq -n null $ fq -ni null> ^D $ fq -n 123 123 $ fq -ni 123 number> ^D $ fq -n "[1,2,3]" [ 1, 2, 3 ] $ fq -nc "[1,2,3]" [1,2,3] $ fq --help options addrbase 16 arg [] argdecode [] argjson [] array_truncate 50 bits_format snippet byte_colors 0-255=brightwhite,0=brightblack,32-126:9-13=white color false colors array=white,dumpaddr=yellow,dumpheader=yellow+underline,error=brightred,false=yellow,index=white,null=brightblack,number=cyan,object=white,objectkey=brightblue,prompt_repl_level=brightblack,prompt_value=white,string=green,true=yellow,value=white compact false completion_timeout 10 decode_format probe decode_progress false depth 0 display_bytes 16 expr . expr_eval_path arg expr_file filenames [null] force false include_path join_string \n line_bytes 16 null_input false raw_file [] raw_output false raw_string false repl false show_formats false show_help options sizebase 10 slurp false string_input false unicode false verbose false width 135 $ fq --help formats aac_frame Advanced Audio Coding frame adts Audio Data Transport Stream adts_frame Audio Data Transport Stream frame amf0 Action Message Format 0 apev2 APEv2 metadata tag ar Unix archive asn1_ber ASN1 BER (basic encoding rules, also CER and DER) av1_ccr AV1 Codec Configuration Record av1_frame AV1 frame av1_obu AV1 Open Bitstream Unit avc_annexb H.264/AVC Annex B avc_au H.264/AVC Access Unit avc_dcr H.264/AVC Decoder Configuration Record avc_nalu H.264/AVC Network Access Layer Unit avc_pps H.264/AVC Picture Parameter Set avc_sei H.264/AVC Supplemental Enhancement Information avc_sps H.264/AVC Sequence Parameter Set avro_ocf Avro object container file bencode BitTorrent bencoding bitcoin_blkdat Bitcoin blk.dat bitcoin_block Bitcoin block bitcoin_script Bitcoin script bitcoin_transaction Bitcoin transaction bsd_loopback_frame BSD loopback frame bson Binary JSON bzip2 bzip2 compression cbor Concise Binary Object Representation csv Comma separated values dns DNS packet dns_tcp DNS packet (TCP) elf Executable and Linkable Format ether8023_frame Ethernet 802.3 frame exif Exchangeable Image File Format fairplay_spc FairPlay Server Playback Context flac Free Lossless Audio Codec file flac_frame FLAC frame flac_metadatablock FLAC metadatablock flac_metadatablocks FLAC metadatablocks flac_picture FLAC metadatablock picture flac_streaminfo FLAC streaminfo gif Graphics Interchange Format gzip gzip compression hevc_annexb H.265/HEVC Annex B hevc_au H.265/HEVC Access Unit hevc_dcr H.265/HEVC Decoder Configuration Record hevc_nalu H.265/HEVC Network Access Layer Unit hevc_pps H.265/HEVC Picture Parameter Set hevc_sps H.265/HEVC Sequence Parameter Set hevc_vps H.265/HEVC Video Parameter Set html HyperText Markup Language icc_profile International Color Consortium profile icmp Internet Control Message Protocol icmpv6 Internet Control Message Protocol v6 id3v1 ID3v1 metadata id3v11 ID3v1.1 metadata id3v2 ID3v2 metadata ipv4_packet Internet protocol v4 packet ipv6_packet Internet protocol v6 packet jpeg Joint Photographic Experts Group file json JavaScript Object Notation jsonl JavaScript Object Notation Lines macho Mach-O macOS executable macho_fat Fat Mach-O macOS executable (multi-architecture) matroska Matroska file mp3 MP3 file mp3_frame MPEG audio layer 3 frame mp4 ISOBMFF MPEG-4 part 12 and similar mpeg_asc MPEG-4 Audio Specific Config mpeg_es MPEG Elementary Stream mpeg_pes MPEG Packetized elementary stream mpeg_pes_packet MPEG Packetized elementary stream packet mpeg_spu Sub Picture Unit (DVD subtitle) mpeg_ts MPEG Transport Stream msgpack MessagePack ogg OGG file ogg_page OGG page opus_packet Opus packet pcap PCAP packet capture pcapng PCAPNG packet capture png Portable Network Graphics file prores_frame Apple ProRes frame protobuf Protobuf protobuf_widevine Widevine protobuf pssh_playready PlayReady PSSH raw Raw bits rtmp Real-Time Messaging Protocol sll2_packet Linux cooked capture encapsulation v2 sll_packet Linux cooked capture encapsulation tar Tar archive tcp_segment Transmission control protocol segment tiff Tag Image File Format toml Tom's Obvious, Minimal Language udp_datagram User datagram protocol vorbis_comment Vorbis comment vorbis_packet Vorbis packet vp8_frame VP8 frame vp9_cfm VP9 Codec Feature Metadata vp9_frame VP9 frame vpx_ccr VPX Codec Configuration Record wasm WebAssembly Binary Format wav WAV file webp WebP image xing Xing header xml Extensible Markup Language yaml YAML Ain't Markup Language zip ZIP archive $ fq -X exitcode: 2 stderr: error: -X: no such argument $ fq --X exitcode: 2 stderr: error: --X: no such argument $ fq -. exitcode: 2 stderr: error: -.: no such argument