Remove Characters From the End of a Binary File
This page answers questions like these:
- How to remove characters from the end of a binary file?
- How to remove characters from the end of a large binary file?
- How to remove characters from the end of a huge binary file?
- How to remove characters from the end of a massive binary file?
- How to remove characters from the end of a enormous binary file?
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Remove Characters From the End of a Large File
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Remove Characters From the End of a Binary File:
truncate -s FILESIZE FILE ...
- Resize each file to be exactly size FILESIZE bytes.
- Pros: Works for both text and binary files.
- Cons: Some systems don’t have the truncate command.
- Caveats: If resizing up, the new bytes will be set to zero.
dd if=FILE1 of=FILE2 bs=FILESIZE2 count=1
- Copy FILESIZE2 characters from existing file FILE1 to new file FILE2.
- Pros: Works for both text and binary files.
- Cons: If the bs parameter is huge, you may run out of memory on some systems.
If FILESIZE2 is not prime, factorizing it and putting the product of some of the factors into the bs parameter and the product of the rest of the factors into the count parameter may alleviate this problem.
Note that, if the count parameter is huge, the command will run very slowly, for example, running dd if=FILE1 of=FILE2 bs=1 count=FILESIZE2 would never run out of memory but it would run extremely slowly on huge files.
Related Links:
Remove Characters From the End of a Large File
Remove Characters From the Start of a Binary File
Remove Characters From the Start of a Large File
Find Positions of a Hexadecimal Sequence in a File
Home > Linux / Unix > Remove Characters From the End of a Binary File
Tags: remove characters from end, binary file, huge binary file, massive binary file, enormous binary file, long binary file, linux, unix, solaris, bsd, aix
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