How to create a 50MB & 100MB files

[Rosli Ahmad]

Hi,
I'm wondering if there's a quick and dirty way to create a sample 50MB & 100MB files for testing purposes. I'm in the midst of a throughput testing and need to sample files for comparison.

Also, what's the command to use to capture/ measure execution time? Is it 'time' command?

[NiCK_76 · Accepted solution]

hi Rosli Ahmad ,

dd bs=50M if=/dev/zero of=aaa count=1
dd bs=100M if=/dev/zero of=aaa count=1
NiCK

[Rosli Ahmad]

Thanks NiCK, any idea how to intepret time output?

[NiCK_76]

Hi Rosli Ahmad ,

just press "Ctrl+C" to stop it.

NiCK

[Huc_1]

I am not sure but maybe this is what you ask for ?

#time -E dd bs=50M if=/dev/zero of=aaa count=1

notice the -E there are many options this one is for Hour, Min, sec more discriptions are to be found in

# man 2 time

Hope this is what you required?

J-P Huc

[Huc_1]

Zero points for my previous reply please It is wrong !

this should read

# time ´ a command ´

You will find more explainations about the output format in following man page

man 2 times


J-P