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75 lines
1.9 KiB
Bash
75 lines
1.9 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-07-23 12:31:21 +0100 (Thu, 23 Jul 2020)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC2034
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usage_description="
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Finds duplicate files by file size in bytes
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Output format:
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<size_in_bytes> <filename>
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For a much more sophisticated duplicate file finder utilizing size, checksums, basenames and
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even partial basenames via regex match see
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find_duplicate_files.py
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in the DevOps Python tools repo:
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https://github.com/HariSekhon/DevOps-Python-tools
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<dir1> <dir2> ...]"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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help_usage "$@"
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last_size=""
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last_filename=""
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last_printed=0
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# GNU coreutils du has bytes, whereas Mac's du only goes to the less granular blocks which is less accurate
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if is_mac; then
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du_files(){
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gdu -ab "$@"
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}
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else
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du_files(){ du -ab "$@"; }
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fi
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# export function to be used in subshell with xargs, intentionally name it differently than du to make debugging easier
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export -f du_files
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while read -r size filename; do
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if [ "$size" = "$last_size" ]; then
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if [ "$last_printed" = 0 ]; then
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printf '%s\t%s\n' "$last_size" "$last_filename"
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fi
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printf '%s\t%s\n' "$size" "$filename"
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last_printed=1
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else
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last_printed=0
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fi
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last_size="$size"
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last_filename="$filename"
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done < <(for dir in "${@:-$PWD}"; do find "$dir" -type f -print0; done | xargs -0 bash -c 'du_files "$@"' | sort -k1n)
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