82 lines
2.7 KiB
Bash
82 lines
2.7 KiB
Bash
#!/usr/bin/env bash
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toBackupDir='/home/pi'
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backupsDir='/media/pimain/backup-tmp/pi'
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# Space-separated directory names to ignore (directories will be pruned)
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# Example: ignoreDirNames=".venv target node_modules build"
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# Leave empty to include all directories.
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ignoreDirNames="immich homeassistant test .ssh .venv target node_modules build .config .cache .cargo .docker foty .m2 .npm .oh-my-zsh .ollama .local .giti tmp temp testowe"
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# Space-separated file name patterns to ignore (globs). Example:
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# ignoreFilePatterns="*.jpg *.png *.jar"
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# Leave empty to include all file patterns.
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#ignoreFilePatterns="*.jpg *.jped *.png *.jar *.mp4 *mp3"
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ignoreFilePatterns=""
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# Get current date in YYYYMMDD format
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dateStamp=$(date +%Y%m%d)
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backupFolderPrefix="pihome_"
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# Function to check if backup is from last day of month
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is_last_day_of_month() {
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local file=$1
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local date=$(basename "$file" .tgz)
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# Check if next day is first day of next month
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if [ "$(date -d "$date +1 day" +%d)" = "01" ]; then
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return 0
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else
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return 1
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fi
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}
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# Create tar.gz archive file list with optional ignored directories
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if cd "$toBackupDir"; then
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# Build prune expression for find from ignoreDirNames
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prune_expr=()
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if [ -n "$ignoreDirNames" ]; then
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for d in $ignoreDirNames; do
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prune_expr+=( -name "$d" -o )
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done
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# remove trailing -o
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unset 'prune_expr[${#prune_expr[@]}-1]'
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else
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# ensure valid find expression when nothing to prune
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prune_expr=( -false )
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fi
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# Build file-name ignore expression from ignoreFilePatterns
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name_expr=()
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if [ -n "$ignoreFilePatterns" ]; then
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for p in $ignoreFilePatterns; do
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name_expr+=( -name "$p" -o )
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done
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# remove trailing -o
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unset 'name_expr[${#name_expr[@]}-1]'
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else
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# ensure valid find expression when nothing to exclude by name
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name_expr=( -false )
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fi
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if find . \( -type d \( "${prune_expr[@]}" \) -prune \) -o \( -type f ! \( "${name_expr[@]}" \) -print0 \) | tar -czf "$backupsDir/$backupFolderName${dateStamp}.tgz" --null -T -; then
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chown pi:pi $backupsDir/$backupFolderName${dateStamp}.tgz
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echo "Backup completed successfully: $backupsDir/$backupFolderName${dateStamp}.tgz"
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# Remove backups older than 7 days except last day of month backups
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find "$backupsDir" -name "${backupFolderPrefix}*.tgz" -type f -mtime +7 | while read -r file; do
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fileDtgName=$(echo $file | cut -d '_' -f 2)
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if ! is_last_day_of_month "$fileDtgName"; then
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rm "$fileDtgName"
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fi
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done
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else
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echo "Error creating backup"
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exit 1
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fi
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else
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echo "Error: cannot cd to $toBackupDir"
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exit 1
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fi
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