sometimes it is required to generate a lot of test data
vim /scripts/copy_x_times.sh #!/bin/bash # copy given file x times # usage: copy filename.jpg a 100 times # ./copy_x_times.sh filename.jpg 100 for ((i=1; i<=$2; i++)) do cp -v "$1" "$1-$i"; done; /scripts/copy_x_times.sh "very-large-image.jpg" 100 # how much test data was generated? du -hs . 3.7G . # generate checksums sha512sum * > sha512sums
now do something with this test data
and later
to check if all data is still intact, simply run
sha512sum -c sha512sums
very-large-image.jpg-45 ok
very-large-image.jpg-55 ok
very-large-image.jpg-56 ok
...
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