$ dd if=/dev/zero of=dummy10MB.file bs=$(expr 1024 \* 1024) count=10 10+0 records in 10+0 records out 10485760 bytes transferred in 0.089249 secs (117488647 bytes/sec) $ $ ls -lh total 20488 -rw-r--r--@ 1 xxxx xxxx 2.0K 12 14 23:15 300x300.png -rw-r--r-- 1 xxxx xxxx 10M 12 15 00:02 dummy10MB.file
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