File --help
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file --help Usage: file [OPTION...] [FILE...] Determine type of FILEs. --help display this help and exit -v, --version output version information and exit -m, --magic-file LIST use LIST as a colon-separated list of magic number files -M LIST use LIST as a colon-separated list of magic number files in place of default LIST use LIST as a colon-separated list of magic number files in place of default -z, --uncompress try to look inside compressed files -Z, --uncompress-noreport only print the contents of compressed files -b, --brief do not prepend filenames to output lines -c, --checking-printout print the parsed form of the magic file, use in conjunction with -m to debug a new magic file before installing it -d use default magic file use default magic file -e, --exclude TEST exclude TEST from the list of test to be performed for file. Valid tests are: apptype, ascii, cdf, compress, csv, elf, encoding, soft, tar, json, text, tokens --exclude-quiet TEST like exclude, but ignore unknown tests -f, --files-from FILE read the filenames to be examined from FILE -F, --separator STRING use string as separator instead of `:' -i do not further classify regular files do not further classify regular files -I, --mime output MIME type strings (--mime-type and --mime-encoding) --extension output a slash-separated list of extensions --mime-type output the MIME type --mime-encoding output the MIME encoding -k, --keep-going don't stop at the first match -l, --list list magic strength -L, --dereference follow symlinks -h, --no-dereference don't follow symlinks (default) -n, --no-buffer do not buffer output -N, --no-pad do not pad output -0, --print0 terminate filenames with ASCII NUL -p, --preserve-date preserve access times on files -P, --parameter set file engine parameter limits bytes 1048576 max bytes to look inside file elf_notes 256 max ELF notes processed elf_phnum 2048 max ELF prog sections processed elf_shnum 32768 max ELF sections processed encoding 65536 max bytes to scan for encoding indir 50 recursion limit for indirection name 60 use limit for name/use magic regex 8192 length limit for REGEX searches -r, --raw don't translate unprintable chars to \ooo -s, --special-files treat special (block/char devices) files as ordinary ones -S, --no-sandbox disable system call sandboxing -C, --compile compile file specified by -m -D, --debug print debugging messages Report bugs to https://bugs.astron.com/
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