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#!/bin/sh
dataset_exists(){
# Check if a ZFS dataset exists.
# $1 = dataset name
zfs list "$1" > /dev/null 2>&1
}
create_dataset(){
# Create a ZFS dataset if it doesn't already exists.
# All options are passed directly to `zfs create`. Assumes the dataset name is
# passed as the final argument.
eval "_bccd_dataset=\$$#"
dataset_exists "$_bccd_dataset" || zfs create -v "$@"
}
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