Search timemachine backups and apfs snapshots for a specific file

lbk

#!/bin/bash
#
# Script which scans all your mounted timemachine volumes, and apfs snapshots for a specific file.
#
# Willem Hengeveld <itsme@xs4all.nl>
#

if [[ $(id -u) -ne 0 ]]; then
    sudo $0 "$@"
    exit $?
fi

tmutil listlocalsnapshots / | while read sn; do
    mkdir "/Volumes/$sn" 2>/dev/null
    mount_apfs -o ro -s "$sn" / "/Volumes/$sn" 2>/dev/null
done

bkdir=
while [[ -n "$1" ]]; do
    cd "$(dirname "$1")"
    realpath=$(pwd -P)
    case "$realpath" in
       /Volumes/*)
            realpath="${realpath:9}"
            ;;
        *)
            realpath="$realpath"
            ;;
    esac

    # the perl code filters out duplicates from timemachine volume, based on inode number.

    # list timemachine backups.
    ls -ild /Volumes/*/Backups.backupdb/*/20*/*"$realpath/$(basename "$1")" | perl -nle 'if (/^\s*(\d+)\s(.*)/ && !$x{$1}++) { print $2; }'

    # list local snapshots.
    ls -ild /Volumes/com.apple.TimeMachine.20*"$realpath/$(basename "$1")" | perl -nle 'if (/^\s*(\d+)\s(.*)/ && !$x{$1}++) { print $2; }'
    shift
done

for sd in /Volumes/com.apple.TimeMachine.20*; do
    umount -f "$sd" 2>/dev/null
done