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| #mkfile on macOS. creates sparse files if possible | |
| #mkfile -n size[b|k|m|g] filename | |
| #1GB sparse file | |
| mkfile -n 1g newfile | |
| #dd | |
| #1GB file | |
| dd if=/dev/zero of=newfile bs=1024 count=1000*1000 |
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