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UDFread
\n
\n $\"Logo\"$ \n
\n
\n \n[![Build]][build_url]\n[![Version]][release_url]\n[![Size]][release_url]\n\n

\n\nUDFread is a small command-line interface for the `libudfread` library.\n\nIt can inspect and selectively read files from UDF images without mounting the\nimage or extracting a complete large file first.\n\nRelease binaries statically link the corresponding upstream `libudfread`\nrelease, so users do not need to install a separate runtime library package.\n\n## Commands 💿\n\n```text\nudfread info IMAGE\nudfread ls [-l] [-R] IMAGE [PATH]\nudfread stat IMAGE PATH\nudfread cat IMAGE PATH\nudfread extract IMAGE PATH DESTINATION\nudfread range [-o DESTINATION] IMAGE PATH OFFSET [LENGTH]\nudfread map IMAGE PATH\nudfread blocks IMAGE PATH FILE_BLOCK [COUNT]\n```\n\n## Examples 🧪\n\nShow information about a UDF image:\n\n```bash\nudfread info disc.iso\n```\n\nList the root directory or recursively inspect a subdirectory:\n\n```bash\nudfread ls -l disc.iso /\nudfread ls -l -R disc.iso /documents\n```\n\nShow information about a file:\n\n```bash\nudfread stat disc.iso /documents/manual.pdf\n```\n\nWrite a text file to standard output:\n\n```bash\nudfread cat disc.iso /README.TXT\n```\n\nExtract one file without unpacking the complete image:\n\n```bash\nudfread extract disc.iso /images/logo.png ./logo.png\n```\n\nRead only a selected byte range from a large file:\n\n```bash\nudfread range -o file-header.bin disc.iso /data/archive.bin 0 4096\nudfread range disc.iso /data/archive.bin 0x1000 0x200 | sha256sum\n```\n\n`range` performs a real logical seek through `libudfread`, so it reads only the\nrequested part of a file even when the UDF file uses multiple allocation\nextents.\n\nNumbers may be decimal or hexadecimal with a `0x` prefix.\n\nShow how the logical blocks of a file map to physical locations in the image:\n\n```bash\nudfread map disc.iso /video/movie.m2ts\nudfread blocks disc.iso /video/movie.m2ts 0 16\n```\n\n## Case-insensitive paths 🔤\n\nUse `-i` or `--ignore-case` with any command that accepts a UDF path to resolve\neach path component using ASCII case-insensitive matching:\n\n```bash\nudfread stat -i disc.iso /DOCUMENTS/MANUAL.PDF\nudfread extract --ignore-case disc.iso /IMAGES/LOGO.PNG ./logo.png\n```\n\nAn exact component match always takes precedence. If no exact match exists and\nmultiple entries differ only by ASCII letter case, the lookup fails as\nambiguous instead of selecting an entry arbitrarily.\n\nOutput from commands such as `stat` and `ls` uses the actual path spelling\nstored in the image.\n\n## Install a release package 📦\n\nDownload the package matching the host architecture from the latest GitHub\nrelease and install it with `apt`:\n\n```bash\nsudo apt install ./udfread_VERSION_amd64.deb\n```\n\nThe package has no runtime dependency on a separately installed `libudfread`\npackage.\n\n## Build on Debian or Ubuntu 🛠️\n\nThe build automatically retrieves the newest stable upstream `libudfread` tag,\nbuilds it as a static library, and links it into `udfread`:\n\n```bash\nsudo apt-get update\nsudo apt-get install -y build-essential git meson ninja-build pkg-config\nmake\nsudo make install\n```\n\nTo build a specific upstream release instead, remove any previously downloaded\nsource and provide the desired tag:\n\n```bash\nmake distclean\nmake LIBUDFREAD_REF=1.2.0\n```\n\nAn existing source checkout can also be supplied directly:\n\n```bash\nmake LIBUDFREAD_SOURCE=/path/to/libudfread LIBUDFREAD_REF=1.2.0\n```\n\nThe default installation path is `/usr/local/bin/udfread`. To use another\nprefix:\n\n```bash\nmake clean\nmake\nsudo make install PREFIX=/usr\n```\n\nUse `make clean` to remove build products while retaining the downloaded\nupstream source, or `make distclean` to remove both.\n\n## Stars 🌟\n\n[![Stargazers](https://raw.githubusercontent.com/star-stats/stars/refs/heads/data/charts/qemus-udfread.svg)](https://github.com/qemus/udfread/stargazers)\n\n[build_url]: https://github.com/qemus/udfread/\n[release_url]: https://github.com/qemus/udfread/releases/\n\n[Build]: https://github.com/qemus/udfread/actions/workflows/build.yml/badge.svg\n[Size]: https://img.shields.io/badge/size-64_KB-steelblue?style=flat&color=066da5\n[Version]: https://img.shields.io/github/v/tag/qemus/udfread?label=version&sort=semver&color=066da5\n","has_starred","hub_user","immutable_tags_settings",{"_147":11,"_148":149},"enabled","rules",[150],".*","is_automated","permissions",{"_154":21,"_155":11,"_156":11},"read","write","admin","user","storage_size",54132,"isOrg","reponame","tag","canDeleteTags","isHubSbxKitsEnabled","currentTab","tagAttestations","displaySecurityMetadata","showSbxLogoOverride","routes/_layout.layers.$namespace.$reponame.$tag.(images).($imageUrlDigest)._index",{"_27":28,"_98":-7,"_96":-7,"_97":-7,"_29":171,"_35":63,"_175":176,"_179":11},{"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":172,"_67":68,"_69":34,"_70":71,"_72":73,"_74":75,"_76":77,"_78":64,"_79":68,"_80":59,"_81":21},[173,174],{"_44":45,"_35":46,"_47":48,"_49":50,"_51":52,"_53":54,"_55":48,"_56":-5,"_57":38,"_58":59,"_60":-5},{"_44":62,"_35":63,"_47":48,"_49":64,"_51":65,"_53":54,"_55":48,"_56":-5,"_57":66,"_58":59,"_60":-5},"imageWithLayers",{"_44":62,"_35":63,"_47":48,"_49":64,"_51":65,"_85":177,"_53":54,"_55":48,"_56":-5,"_57":66,"_58":59,"_60":-5},[178],{"_35":94,"_57":66,"_89":95},"hasPermissionToViewRepoSettings","actionData","errors"]

UDFread\n\n\n\n\n \n[![Build]][build_url]\n[![Version]][release_url]\n[![Size]][release_url]\n\n

UDFread
\n
\n $\"Logo\"$ \n
\n
\n \n[![Build]][build_url]\n[![Version]][release_url]\n[![Size]][release_url]\n\n

qemux/udfread:1.2.0