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GNU find (default -P) does not descend a command-line symlink to a directory, so `find $HOME/Music ...` returned zero files and the tool reported '0 added, 0 updated, 0 unchanged' without creating the target. Switch to `find -H` (follows only command-line symlinks; inner-symlink semantics unchanged).
139 lines
4.5 KiB
Bash
Executable File
139 lines
4.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# POS: media sync — Incremental Music → USB sync (mp3/mp4, add/update only)
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# POS_FLAGS: --mp3 --mp4 --source --dry-run
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source "$(dirname "$0")/../lib/common.sh" 2>/dev/null || source "$(dirname "$0")/common.sh"
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source "$(dirname "$0")/../lib/notify.sh" 2>/dev/null || source "$(dirname "$0")/notify.sh"
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source "$(dirname "$0")/../lib/usb-lib.sh" 2>/dev/null || source "$(dirname "$0")/usb-lib.sh"
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load_system_env
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# Deps guards sit before -h|--help (help also errors on a box missing the deps).
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command -v lsblk &>/dev/null || err "lsblk not found (util-linux) — needed to detect USB storage"
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command -v jq &>/dev/null || err "jq not found — needed to detect USB storage (sudo apt install jq)"
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SRC="${MEDIA_SYNC_SOURCE:-$HOME/Music}"
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DEST_DIR="${MEDIA_SYNC_DEST:-Music}"
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MP3=0
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MP4=0
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DRY_RUN=0
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usage() {
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cat <<EOF
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Usage: pos media sync [options]
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Incrementally copy your music onto a USB stick. Add/update only — files on
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the stick that are no longer in the source are left alone, never deleted.
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USB storage is detected like \`pos system backup\` (lsblk TRAN + lsusb/by-id
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corroboration; unmounted sticks get a mount offer first) and you pick which
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one to sync to. The source tree is mirrored under <usb>/$DEST_DIR.
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Options:
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--mp3 Sync only *.mp3 files
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--mp4 Sync only *.mp4 files
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--source <dir> Source folder (default: $SRC)
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--dry-run Preview what would be copied (copies nothing)
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-h, --help This help
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Examples:
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pos media sync
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pos media sync --mp3
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pos media sync --mp4 --dry-run
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pos media sync --source /data/Music
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Environment:
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MEDIA_SYNC_SOURCE Source folder (default: \$HOME/Music)
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MEDIA_SYNC_DEST Subfolder on the USB stick (default: Music)
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USB_MOUNT_BASE Where to mount an unmounted stick (default: /media)
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USB_BYID by-id dir used to corroborate USB detection
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(default: /dev/disk/by-id)
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(loaded from ~/.config/linux_post_install/system.env unless exported)
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EOF
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exit 0
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}
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-h|--help) usage ;;
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--mp3) MP3=1; shift ;;
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--mp4) MP4=1; shift ;;
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--dry-run) DRY_RUN=1; shift ;;
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--source)
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[ $# -ge 2 ] || err "--source needs a value: pos media sync --source <dir>"
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SRC="$2"; shift 2 ;;
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--source=*) SRC="${1#--source=}"; shift ;;
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-*) err "Unknown option: $1 (see --help)" ;;
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*) err "Unexpected argument: $1 (see --help)" ;;
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esac
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done
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[ "$MP3" -eq 1 ] || [ "$MP4" -eq 1 ] || { MP3=1; MP4=1; }
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[ -d "$SRC" ] || err "Source not found: $SRC"
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trap 'notify_send "Music sync FAILED"' ERR
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section "Music sync"
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echo "Source : $SRC"
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if [ "$MP3" -eq 1 ] && [ "$MP4" -eq 1 ]; then
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echo "Filter : mp3 + mp4"
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find_expr=(-type f \( -iname '*.mp3' -o -iname '*.mp4' \))
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elif [ "$MP3" -eq 1 ]; then
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echo "Filter : mp3 only"
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find_expr=(-type f -iname '*.mp3')
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else
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echo "Filter : mp4 only"
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find_expr=(-type f -iname '*.mp4')
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fi
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usb_pick_root "Sync to" "$DEST_DIR" "no sync performed" || {
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log "Skipped — no sync performed"
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exit 0
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}
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dest_root="${USB_ROOT%/}/$DEST_DIR"
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echo "Target : $dest_root"
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# Does the destination need this file copied? Missing, or size/mtime differs.
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needs_copy() {
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local src="$1" dst="$2" ss="" ds="" sm="" dm=""
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[ -f "$dst" ] || return 0
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ss="$(stat -c %s "$src" 2>/dev/null || printf 0)"
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ds="$(stat -c %s "$dst" 2>/dev/null || printf 0)"
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sm="$(stat -c %Y "$src" 2>/dev/null || printf 0)"
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dm="$(stat -c %Y "$dst" 2>/dev/null || printf 0)"
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[ "$ss" = "$ds" ] && [ "$sm" -le "$dm" ] && return 1
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return 0
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}
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added=0
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updated=0
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unchanged=0
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while IFS= read -r f; do
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rel="${f#"$SRC/"}"
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dest="$dest_root/$rel"
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if needs_copy "$f" "$dest"; then
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if [ -f "$dest" ]; then
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updated=$((updated + 1))
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else
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added=$((added + 1))
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fi
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if [ "$DRY_RUN" -eq 1 ]; then
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log "would copy $rel"
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else
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mkdir -p "$(dirname "$dest")"
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cp --preserve=timestamps "$f" "$dest"
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echo " + $rel"
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fi
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else
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unchanged=$((unchanged + 1))
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fi
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done < <(find -H "$SRC" "${find_expr[@]}" | sort)
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if [ "$DRY_RUN" -eq 1 ]; then
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echo "DRY RUN — nothing copied. Would sync: ${added} new, ${updated} updated, ${unchanged} unchanged → $dest_root"
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else
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ok "Sync complete: ${added} added, ${updated} updated, ${unchanged} unchanged → $dest_root"
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notify_send "Music sync completed: ${added} added, ${updated} updated → $dest_root"
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fi
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