Update for FILE v4.12.
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Ruslan Ermilov
parent
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commit
8e0675e010
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=139375
@ -1,6 +1,6 @@
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.\" $FreeBSD$
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.\" $Id: file.man,v 1.44 2003/02/27 20:47:46 christos Exp $
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.Dd February 27, 2003
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.\" $Id: file.man,v 1.54 2003/10/27 18:09:08 christos Exp $
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.Dd October 27, 2003
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.Dt FILE 1 "Copyright but distributable"
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.Os
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.Sh NAME
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@ -8,7 +8,7 @@
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.Nd determine file type
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.Sh SYNOPSIS
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.Nm
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.Op Fl bciknNsvzL
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.Op Fl bcikLnNprsvz
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.Op Fl f Ar namefile
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.Op Fl F Ar separator
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.Op Fl m Ar magicfiles
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@ -17,7 +17,7 @@
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.Fl C
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.Op Fl m Ar magicfile
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.Sh DESCRIPTION
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This manual page documents version 3.41 of the
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This manual page documents version 4.12 of the
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.Nm
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utility which tests each argument in an attempt to classify it.
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There are three sets of tests, performed in this order:
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@ -159,19 +159,19 @@ in any of the character sets listed above is simply said to be
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.Dq Li data .
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.Sh OPTIONS
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.Bl -tag -width indent
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.It Fl b
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.It Fl b , -brief
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Do not prepend filenames to output lines (brief mode).
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.It Fl c
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.It Fl c , -checking-printout
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Cause a checking printout of the parsed form of the magic file.
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This is usually used in conjunction with
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.Fl m
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to debug a new magic file before installing it.
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.It Fl C
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.It Fl C , -compile
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Write a
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.Pa magic.mgc
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output file that contains a pre-parsed version of
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file.
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.It Fl f Ar namefile
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.It Fl f , -files-from Ar namefile
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Read the names of the files to be examined from
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.Ar namefile
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(one per line)
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@ -182,10 +182,12 @@ or at least one filename argument must be present;
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to test the standard input, use
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.Dq Fl
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as a filename argument.
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.It Fl F Ar separator
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Use the specified separator character instead of
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.It Fl F , -separator Ar separator
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Use the specified string as the separator between the filename and the
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file result returned.
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Defaults to
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.Ql \&: .
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.It Fl i
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.It Fl i , -mime
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Causes the file command to output mime type strings rather than the more
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traditional human readable ones.
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Thus it may say
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@ -200,27 +202,44 @@ file.
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(See
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.Sx FILES
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section, below).
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.It Fl k
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.It Fl k , -keep-going
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Don't stop at the first match, keep going.
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.It Fl m Ar list
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.It Fl L , -dereference
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option causes symlinks to be followed, as the like-named option in
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.Xr ls 1 .
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(on systems that support symbolic links).
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.It Fl m , -magic-file Ar list
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Specify an alternate list of files containing magic numbers.
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This can be a single file, or a colon-separated list of files.
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.It Fl n
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If a compiled magic file is found alongside, it will be used instead.
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With the
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.Fl i
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or
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.Fl -mime
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option, the program adds
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.Pa .mime
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to each file name.
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.It Fl n , -no-buffer
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Force stdout to be flushed after checking each file.
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This is only useful if checking a list of files.
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It is intended to be used by programs that want
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filetype output from a pipe.
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.It Fl N
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Don't pad output to align filenames nicely.
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.It Fl v
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Print the version of the program and exit.
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.It Fl z
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Try to look inside compressed files.
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.It Fl L
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option causes symlinks to be followed, as the like-named option in
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.Xr ls 1 .
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(on systems that support symbolic links).
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.It Fl s
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.It Fl N , -no-pad
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Don't pad filenames so that they align in the output.
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.It Fl p , -preserve-date
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On systems that support
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.Xr utime 3
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or
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.Xr utimes 2 ,
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attempt to preserve the access time of files analyzed, to pretend that
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.Nm
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never read them.
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.It Fl r , -raw
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Don't translate unprintable characters to \eooo.
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Normally
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.Nm
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translates unprintable characters to their octal representation.
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.It Fl s , -special-files
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Normally,
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.Nm
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only attempts to read and determine the type of argument files which
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@ -240,22 +259,41 @@ This option also causes
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to disregard the file size as reported by
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.Xr stat 2
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since on some systems it reports a zero size for raw disk partitions.
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.It Fl v , -version
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Print the version of the program and exit.
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.It Fl z , -uncompress
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Try to look inside compressed files.
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.It Fl -help
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Print a help message and exit.
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.El
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.Sh FILES
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.Bl -tag -width ".Pa /usr/share/misc/magic.mime" -compact
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.It Pa /usr/share/misc/magic.mgc
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default compiled list of magic numbers
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Default compiled list of magic numbers
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.It Pa /usr/share/misc/magic
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default list of magic numbers
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.It Pa /usr/share/misc/magic.mime
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default list of magic numbers, used to output mime types when the
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Default list of magic numbers
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.It Pa /usr/share/misc/magic.mime.mgc
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Default compiled list of magic numbers, used to output mime types when
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the
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.Fl i
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option is specified.
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.It Pa /usr/share/misc/magic.mime
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Default list of magic numbers, used to output mime types when the
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.Fl i
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option is specified.
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.It Pa /etc/magic
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Local additions to magic wisdom.
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.El
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.Sh ENVIRONMENT
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The environment variable
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.Ev MAGIC
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can be used to set the default magic number files.
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can be used to set the default magic number file name.
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.Nm
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adds
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.Pa .mime
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and/or
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.Pa .mgc
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to the value of this variable as appropriate.
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.Sh SEE ALSO
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.Xr hexdump 1 ,
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.Xr od 1 ,
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@ -331,7 +369,7 @@ file: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
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$ file -s /dev/wd0{b,d}
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/dev/wd0b: data
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/dev/wd0d: x86 boot sector
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$ file -s /dev/hda{,1,2,3,4,5,6,7,8,9,10} # Linux
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$ file -s /dev/hda{,1,2,3,4,5,6,7,8,9,10}
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/dev/hda: x86 boot sector
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/dev/hda1: Linux/i386 ext2 filesystem
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/dev/hda2: x86 boot sector
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@ -344,22 +382,6 @@ $ file -s /dev/hda{,1,2,3,4,5,6,7,8,9,10} # Linux
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/dev/hda9: empty
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/dev/hda10: empty
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$ file -s /dev/rwd0e # BSD
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/dev/rwd0e:
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Unix Fast File system (little-endian),
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last mounted on /usr,
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last written at Mon Feb 10 13:22:40 2003,
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clean flag 2,
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number of blocks 28754208,
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number of data blocks 27812712,
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number of cylinder groups 3566,
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block size 8192,
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fragment size 1024,
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minimum percentage of free blocks 5,
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rotational delay 0ms,
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disk rotational speed 60rps,
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TIME optimization
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$ file -i file.c file /dev/{wd0a,hda}
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file.c: text/x-c
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file: application/x-executable, dynamically linked (uses shared libs),
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@ -518,8 +540,8 @@ they are not as good as other guesses (e.g.\&
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.Dq Li "Newsgroups:"
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versus
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.Dq Li "Return-Path:" ) .
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Still, if the others don't pan out, it should be
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possible to use the first guess.
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Still, if the others don't pan out, it should be possible to use the
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first guess.
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.Pp
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This program is slower than some vendors' file commands.
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The new support for multiple character codes makes it even slower.
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