Create a 1 GiB file containing only zeros

Create a 1 GiB file containing only zeros (bs=blocksize, count=number of blocks):

time dd if=/dev/zero of=trash bs=1M count=1024

Benchmark
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Laptop HP Wrk
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 14.2728 s, 75.2 MB/s
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Server T110
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 9.777131 s, 110 MB/s
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