MAGIC NUMBER ARCHIVE

It remains here, commented out, in caseĠ string 070702 ASCII cpio archive - CRC headerĠ short 070707 cpio archive - CHR (-c) headerĠ string 070707 ASCII cpio archive - CHR (-c) headerĠ short 0177545 pdp11/pre System V ar archiveĠ short 0407 pdp11/pre System V vax executableĠ short 0410 pdp11/pre System V vax pure executable # The entry for ELF is not needed anymore, as file now uses the elf(3e) # afterwards not so marked terminates the search. # continue scanning and matching additional lines. # The '>' in occassional column 1's is magic: it forces file to # to match (numeric or string), and string to be printed. # byte offset, value type, optional operator (= by default), value #ěasically, the fields of this file are as follows: From the command line a user can do the following command, 'File script', which will result in the output, 'script: executable shell script'.Īppended below is the contents of the file SMI' /* SVr4.0 1.30 */ If a localized magic file does not exist, the /etc/magic file is utilized. By default the localized magic file /usr/lib/locale/locale/LC_MESSAGES/magic is used to identify files that have a magic number. This number is in the first 512 bytes of the file.

ANSWER: A magic number is a numeric or string constant that indicates the file type.

Magic number