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  1. April 30th, 2003, 09:30 AM #1
    robgramer
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    Unhappy compiled code --> source code???

    hi,
    i accidentally erased a rather important source code file (simple text file created with vi on a linux machine) but luckily compiled it beforehand.

    is it possible to take a compiled program and get back the original (or nearly original) source code text?

    thanks!

    -R.G.
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  2. April 30th, 2003, 09:40 AM #2
    robgramer
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    addendum

    i'm using the "cc" compiler in linux to compile my programs.
    -R.G.
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  3. April 30th, 2003, 09:40 AM #3
    Andreas Masur
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    Take a look at this thread...
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  4. April 30th, 2003, 10:00 AM #4
    robgramer
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    ok

    hi,
    thanks for the link to that thread. i did read it and found it interesting. so are you recommending that i get that program "ice" or whatever it's called?
    -R.G.
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  6. April 30th, 2003, 10:13 AM #5
    Gabriel Fleseriu's Avatar
    Gabriel Fleseriu
    Gabriel Fleseriu is offline Microsoft MVP Power Poster
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    Re: ok

    Originally posted by robgramer
    hi,
    thanks for the link to that thread. i did read it and found it interesting. so are you recommending that i get that program "ice" or whatever it's called?
    -R.G.
    Before spending your money on SoftIce, take the time and read that thread. It is not possible to reverse engineer a C++ program. No tool on this planet is able to take a compiled file and to re-create the C++ code for it.

    In your case, it is much less expensive to re-write the code than to try to reverse engineer the image.
    Gabriel, CodeGuru moderator

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    And nothing else matters     - Metallica

    Learn about the advantages of std::vector.
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  7. April 30th, 2003, 10:33 AM #6
    robgramer
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    thanks

    ok, thanks. i'm writing in just C actually, but it seems that what you've said applies to C as well. yeah, i'm definitely not going to buy a program like softice. i am just a beginning programmer who made a mistake of deleting a file and was curious if there was an easy fix to getting my source code back.
    thanks again for the help.
    -R.G.
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  8. April 30th, 2003, 10:38 AM #7
    Gabriel Fleseriu's Avatar
    Gabriel Fleseriu
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    Re: thanks

    Originally posted by robgramer
    ok, thanks. i'm writing in just C actually, but it seems that what you've said applies to C as well. yeah, i'm definitely not going to buy a program like softice. i am just a beginning programmer who made a mistake of deleting a file and was curious if there was an easy fix to getting my source code back.
    thanks again for the help.
    -R.G.
    I've heard that there are some tools that reverse images to C, but I've also heard that the produced code is practically un-readable. In other words, not worth the effort. For the sake of completeness, I must say that I never used such a tool, so my information is not "first hand".

    Sorry that you've lost the code, I know how frustrating that is. I wish you good luck in re-writing it
    Gabriel, CodeGuru moderator

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    And nothing else matters     - Metallica

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  9. April 30th, 2003, 10:53 AM #8
    Paul McKenzie
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    Re: thanks

    Originally posted by robgramer
    ok, thanks. i'm writing in just C actually, but it seems that what you've said applies to C as well. yeah, i'm definitely not going to buy a program like softice. i am just a beginning programmer who made a mistake of deleting a file and was curious if there was an easy fix to getting my source code back.
    thanks again for the help.
    -R.G.
    Maybe when you rewrite it, the program will be better than the first version

    Regards,

    Paul McKenzie
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  11. April 30th, 2003, 10:59 AM #9
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    Graham
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    Doesn't linux have a recycle bin that you can retrieve accidentally deleted files from?
    <sarcasm>And there was me believing all that stuff about how Linux does everything so much better than Windows </sarcasm>
    Correct is better than fast. Simple is better than complex. Clear is better than cute. Safe is better than insecure.
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  12. April 30th, 2003, 11:10 AM #10
    Philip Nicoletti
    Philip Nicoletti is offline Elite Member Power Poster
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    Well, I use gnome on my Linux boxes, and if I
    delete using the window manager, it goes to
    my trash folder. If I remove from a terminal it
    doesn't (but I don't think Windows does either).

    And with daily/weekly backups from my raid 5 system
    to another raid 5 system located about 75 miles
    away, its pretty difficult for me to lose much data !
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  13. April 30th, 2003, 12:29 PM #11
    robgramer
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    deleting files

    unfortunately i deleted the file from the command prompt in linux so it's deleted in the full sense of the word i think.
    if i had done this in windows (even in DOS), the file wouldn't have been erased, only its reference in the File Allocation Table if I remember correctly. And there are many programs that can "un-delete" files (you simply lose the first character of the file name for some reason).

    -R.G.
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  14. April 30th, 2003, 01:08 PM #12
    Luis G
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    I've heard of an undelete tool for Linux, try searching freshmeat.net
    int i;main(){for(;i["]<i;++i){--i;}"];read('-'-'-',i+++"hell\
    o, world!\n",'/'/'/'));}read(j,i,p){write(j/p+p,i---j,i/i);}
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