# app-builder Generic helper tool to build app in a distributable formats. Used by [electron-builder](http://github.com/electron-userland/electron-builder) but applicable not only for building Electron applications. ``` usage: app-builder [<flags>] <command> [<args> ...] app-builder Flags: --help Show context-sensitive help (also try --help-long and --help-man). --version Show application version. Commands: help [<command>...] Show help. blockmap --input=INPUT [<flags>] Generates file block map for differential update using content defined chunking (that is robust to insertions, deletions, and changes to input file) -i, --input=INPUT input file -o, --output=OUTPUT output file -c, --compression=gzip compression, one of: gzip, deflate download --url=URL --output=OUTPUT [<flags>] Download file. -u, --url=URL The URL. -o, --output=OUTPUT The output file. --sha512=SHA512 The expected sha512 of file. download-artifact --name=NAME --url=URL [<flags>] Download, unpack and cache artifact from GitHub. -n, --name=NAME The artifact name. -u, --url=URL The artifact URL. --sha512=SHA512 The expected sha512 of file. copy --from=FROM --to=TO [<flags>] Copy file or dir. -f, --from=FROM -t, --to=TO --hard-link Whether to use hard-links if possible appimage --app=APP --stage=STAGE --output=OUTPUT [<flags>] Build AppImage. -a, --app=APP The app dir. -s, --stage=STAGE The stage dir. -o, --output=OUTPUT The output file. --arch=x64 The arch. --compression=COMPRESSION The compression. --remove-stage Whether to remove stage after build. snap --app=APP --stage=STAGE --output=OUTPUT [<flags>] Build snap. -t, --template=TEMPLATE The template file. -u, --template-url=TEMPLATE-URL The template archive URL. --template-sha512=TEMPLATE-SHA512 The expected sha512 of template archive. -a, --app=APP The app dir. -s, --stage=STAGE The stage dir. --icon=ICON The path to the icon. --hooks=HOOKS The hooks dir. --arch=amd64 The arch. -o, --output=OUTPUT The output file. --docker-image="snapcore/snapcraft:latest" The docker image. --docker Whether to use Docker. --remove-stage Whether to remove stage after build. icon --input=INPUT --format=FORMAT --out=OUT [<flags>] create ICNS or ICO or icon set from PNG files -i, --input=INPUT ... input directory or file -f, --format=FORMAT output format --out=OUT output directory -r, --root=ROOT ... base directory to resolve relative path dmg --volume=VOLUME [<flags>] Build dmg. --volume=VOLUME --icon=ICON --background=BACKGROUND clear-exec-stack --input=INPUT -i, --input=INPUT ```