Commands tagged dummy file, null file, test file sorted by votes

Commands tagged dummy file, null file, test file (4)

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Create a bunch of dummy text files

Avoiding a for loop brought this time down to less than 3 seconds on my old machine. And just to be clear, 33554432 = 8192 * 4086.
This is sample output - yours may be different.
10

base64 /dev/urandom | head -c 33554432 | split -b 8192 -da 4 - dummy.

pdxdoughnut · 2013-11-12 17:56:23 9
Create a bunch of dummy text files
This is sample output - yours may be different.
1

for i in `seq 1 4096`; do tr -dc A-Za-z0-9 </dev/urandom | head -c8192 > dummy$i.rnd; done

BoxingOctopus · 2013-11-11 21:27:15 9
Create a bunch of dummy text files

Using the 'time' command, running this with 'tr' took 28 seconds (and change) each time but using base64 only took 8 seconds (and change). If the file doesn't have to be viewable, pulling straight from urandom with head only took 6 seconds (and change)
This is sample output - yours may be different.
1

for i in {1..4096}; do base64 /dev/urandom | head -c 8192 > dummy$i.rnd ; done

pdxdoughnut · 2013-11-12 00:36:10 10
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
This is sample output - yours may be different.
-2

dd if=/dev/zero of=filename.file bs=1024 count=10240

harpo · 2012-01-19 08:38:14 15

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Commands tagged dummy file, null file, test file (4)

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