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Annotation of src/usr.bin/strings/strings.1, Revision 1.1

1.1     ! deraadt     1: .\"    $NetBSD: strings.1,v 1.4 1994/12/10 11:54:28 jtc Exp $
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        !            34: .\"     @(#)strings.1  8.1 (Berkeley) 6/6/93
        !            35: .\"
        !            36: .Dd June 6, 1993
        !            37: .Dt STRINGS 1
        !            38: .Os
        !            39: .Sh NAME
        !            40: .Nm strings
        !            41: .Nd find printable strings in a file
        !            42: .Sh SYNOPSIS
        !            43: .Nm strings
        !            44: .Op Fl afo
        !            45: .Op Fl n Ar number
        !            46: .Op Fl t Ar radix
        !            47: .Op Ar file ...
        !            48: .Sh DESCRIPTION
        !            49: .Nm Strings
        !            50: displays the sequences of printable characters in each of the specified
        !            51: files, or in the standard input, by default.
        !            52: By default, a sequence must be at least four characters in length
        !            53: before being displayed.
        !            54: .Pp
        !            55: The options are as follows:
        !            56: .Bl -tag -width Ds
        !            57: .It Fl a
        !            58: By default,
        !            59: .Nm strings
        !            60: only searches the text and data segments of object files.
        !            61: The
        !            62: .Fl a
        !            63: option causes
        !            64: .Nm strings
        !            65: to search the entire object file.
        !            66: .It Fl f
        !            67: Each string is preceded by the name of the file
        !            68: in which it was found.
        !            69: .It Fl n
        !            70: Specifies the minimum number of characters in a sequence to be
        !            71: .Ar number ,
        !            72: instead of four.
        !            73: .It Fl o
        !            74: Each string is preceded by its octal offset in the file.
        !            75: .It Fl t
        !            76: Each string is preceded by its offset in the file.  The first character of
        !            77: .Ar radix
        !            78: determines the radix of the offset:
        !            79: .Sq o
        !            80: for octal;
        !            81: .Sq d
        !            82: for decimal; or
        !            83: .Sq x
        !            84: for hexadecimal.
        !            85: .El
        !            86: .Pp
        !            87: .Nm Strings
        !            88: is useful for identifying random binaries, among other things.
        !            89: .Sh SEE ALSO
        !            90: .Xr hexdump 1 ,
        !            91: .Xr od 1
        !            92: .Sh BUGS
        !            93: The algorithm for identifying strings is extremely primitive.
        !            94: In particular, machine code instructions on certain architectures
        !            95: can resemble sequences of ASCII bytes, which
        !            96: will fool the algorithm.
        !            97: .Sh COMPATIBILITY
        !            98: Historic implementations of
        !            99: .Nm
        !           100: only search the initialized data portion of the object file.
        !           101: This was reasonable as strings were normally stored there.
        !           102: Given new compiler technology which installs strings in the
        !           103: text portion of the object file, the default behavior was
        !           104: changed.
        !           105: .Sh STANDARDS
        !           106: The
        !           107: .Nm
        !           108: utility conforms to
        !           109: .St -p1003.2-92 .
        !           110: .Sh HISTORY
        !           111: The
        !           112: .Nm
        !           113: utility appeared in
        !           114: .Bx 3.0 .