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#!/usr/bin/env bash
extract () {
if [ -f "$1" ] ; then
case "$1" in
*.tar.bz2) tar xvjf "$1" ;;
*.tar.gz) tar xvzf "$1" ;;
*.bz2) bunzip2 "$1" ;;
*.rar) unrar x "$1" ;;
*.gz) gunzip "$1" ;;
*.tar) tar xvf "$1" ;;
*.tbz2) tar xvjf "$1" ;;
*.tgz) tar xvzf "$1" ;;
*.zip) unzip "$1" ;;
*.Z) uncompress "$1" ;;
*.7z) 7z x "$1" ;;
*.xz) unxz "$1" ;;
*) echo "don't know how to extract '$1'..." ;;
esac
else
echo "'$1' is not a valid file!"
fi
}
merkle-tree () {
dirname="${1-.}"
pushd "$dirname" > /dev/null || exit 1
find . -type f | \
sort | \
xargs -I{} sha256sum "{}" | \
sha256sum | \
awk '{print $1}'
popd > /dev/null || exit 1
}
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