Existe um programa que pode contar a ocorrência de uma certa string em um arquivo binário?

Question

Eu tenho um arquivo binário e preciso contar ocorrências de determinada string neste arquivo ou até mesmo listar com offsets. No Windows ou Linux - para esta tarefa eu uso o Fedora 12 e o Windows 2000.

    

Answer 1

No Linux com GNU grep :

grep -F --text -o --byte-offset mystring binaryfile

Exemplo:

$ grep -F --text -o --byte-offset option /bin/tar
226542:option
237529:option
237612:option
...

Explicação dos parâmetros:

-F, --fixed-strings
      Interpret PATTERN as a list of fixed strings, separated by newlines,
      any of which is to be matched.  (-F is specified by POSIX.)

-a, --text
      Process  a binary file as if it were text; this is equivalent to the
      --binary-files=text option.

-o, --only-matching
      Print  only the matched (non-empty) parts of a matching line, with
      each such part on a separate output line.

-b, --byte-offset
      Print the 0-based byte offset within the input file before each line
      of output. If -o (--only-matching) is specified, print the offset of
      the matching part itself

Para contar as ocorrências, adicione | wc -l à linha de comando.

    

Answer 2

Agent Ransack - Utilitário de busca de arquivos grátis

• Immediate results Found text is shown with highlighted keywords so you don't need to waste time opening each file looking for the
  right information.

• Boolean expressions Combine search terms using the familiar Boolean operators AND, OR, NOT.

• Office formats Support for popular Office formats including Office 2007 and OpenOffice.
• Perl regex Support for Perl compatible regular expressions.
• 64-bit Version Natively compiled 64-bit version for improved compatibility.
• Fast searching Highly efficient search algorithms mean that you spend less time waiting for results.
• Printing and Exporting Results can be shared with others through printing and exporting.

    

Answer 3

No Linux, você pode usar strings -a [filename] | grep [string] | wc -l

No Windows, você pode usar o strings * | findstr /i [string] , com o utilitário de strings da Sysinternals.