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nuke-graph-directory (docker)
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#!/bin/sh | |
set -e | |
dir="$1" | |
if [ -z "$dir" ]; then | |
{ | |
echo 'This script is for destroying old /var/lib/docker directories more safely than' | |
echo ' "rm -rf", which can cause data loss or other serious issues.' | |
echo | |
echo "usage: $0 directory" | |
echo " ie: $0 /var/lib/docker" | |
} >&2 | |
exit 1 | |
fi | |
if [ "$(id -u)" != 0 ]; then | |
echo >&2 "error: $0 must be run as root" | |
exit 1 | |
fi | |
if [ ! -d "$dir" ]; then | |
echo >&2 "error: $dir is not a directory" | |
exit 1 | |
fi | |
dir="$(readlink -f "$dir")" | |
echo | |
echo "Nuking $dir ..." | |
echo ' (if this is wrong, press Ctrl+C NOW!)' | |
echo | |
( set -x; sleep 10 ) | |
echo | |
dir_in_dir() { | |
inner="$1" | |
outer="$2" | |
[ "${inner#$outer}" != "$inner" ] | |
} | |
# let's start by unmounting any submounts in $dir | |
# (like -v /home:... for example - DON'T DELETE MY HOME DIRECTORY BRU!) | |
for mount in $(awk '{ print $5 }' /proc/self/mountinfo); do | |
mount="$(readlink -f "$mount" || true)" | |
if dir_in_dir "$mount" "$dir"; then | |
( set -x; sudo umount -f "$mount" ) | |
fi | |
done | |
# now, let's go destroy individual btrfs subvolumes, if any exist | |
if command -v btrfs > /dev/null 2>&1; then | |
root="$(df "$dir" | awk 'NR>1 { print $NF }')" | |
root="${root#/}" # if root is "/", we want it to become "" | |
for subvol in $(btrfs subvolume list -o "$root/" 2>/dev/null | awk -F' path ' '{ print $2 }' | sort -r); do | |
subvolDir="$root/$subvol" | |
if dir_in_dir "$subvolDir" "$dir"; then | |
( set -x; sudo btrfs subvolume delete "$subvolDir" ) | |
fi | |
done | |
fi | |
# finally, DESTROY ALL THINGS | |
( set -x; sudo rm -rf "$dir" ) |
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