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Create dummy file

Terminal - Create dummy file
dd if=/dev/zero of=filename.file bs=1024 count=10240
2012-01-19 08:38:14
User: harpo
Functions: dd
-2
Create dummy file

Command to create a dummy file (full of nulls). Useful for testing e.g. file transfers when no file is at hand.

bs = blocksize, count = filesize in kilobytes

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Not a sparse file, just a file full of nulls. Sparse is done like so:

dd of=<FILE> bs=1M seek=10 count=0

for a 10 meg file, etc.

Comment by h3xx 184 weeks ago

* check by comparing "ls -lah " and "du -h " after you make it. A 10mb sparse file reads 10k with du.

Comment by h3xx 184 weeks ago

^^corrected

Comment by harpo 184 weeks ago
Comment by totti 183 weeks and 6 days ago

Count is in 'bs bytes' not kb. In this case in kb.

I think this one is a duplicate.

Comment by totti 183 weeks and 6 days ago

Your point of view

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