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sqlite3 database backup script with .backup command and compression
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| #!/bin/bash | |
| # | |
| # sqlite3_backup.sh | |
| # Script for backing up and compress a sqlite3 database, using the .backup command | |
| # Intended for use with cron for regular automated backups | |
| # | |
| # @author @felubra https://github.com/felubra | |
| # based on the original sqlite3_backup.sh script by shaune@princeton.edu | |
| # (https://gist.github.com/sdellis/3835123) | |
| # | |
| DB_PATH=/path/to/db/file | |
| BACKUP_PATH=/path/to/backup/folder/ | |
| # check to see if $DB_PATH exists | |
| if [ ! -f $DB_PATH ] | |
| then | |
| echo ERROR: cannot find the database at the following path: $DB_PATH | |
| exit 1 | |
| fi | |
| # check to make sure $BACKUP_PATH exists and is writable | |
| if [ ! -d $BACKUP_PATH ] | |
| then | |
| # BACKUP_PATH does not exist or is not a directory | |
| echo ERROR: cannot find backup path: $BACKUP_PATH | |
| exit 1 | |
| else | |
| # check to make sure it's writable | |
| if [ ! -w $DB_PATH ] | |
| then | |
| echo ERROR: backup path is not writable: $BACKUP_PATH | |
| exit 1 | |
| fi | |
| fi | |
| # attempt to make a backup | |
| backup_file=$BACKUP_PATH/${DB_PATH##*/}.$(date +%s) | |
| sqlite3 $DB_PATH ".backup '$backup_file'" | |
| did_backup=$? | |
| if [ $did_backup -ne 0 ] | |
| then | |
| #failed to backup | |
| echo ERROR: failed trying to backup $DB_PATH to $backup_file | |
| exit 1 | |
| fi | |
| # compress the backup file | |
| tar cJf $backup_file.xz $backup_file &> /dev/null | |
| backup_did_compress=$? | |
| if [ $backup_did_compress -ne 0 ] | |
| then | |
| #failed to compress the backup | |
| echo ERROR: failed to compress the backup file $backup_file | |
| exit 1 | |
| else | |
| echo SUCCESS: created the compressed backup file $backup_file.xz | |
| rm $backup_file | |
| backup_file=$backup_file.xz | |
| fi | |
| # create a checksum file of the backup | |
| md5sum $backup_file > $BACKUP_PATH/${backup_file##*/}.md5 | |
| calc_md5sum=$? | |
| if [ $calc_md5sum -ne 0 ] | |
| then | |
| # failed create the checksum | |
| echo ERROR: failed to calc the MD5 hash of $backup_file | |
| exit 1 | |
| else | |
| echo INFO: Wrote MD5Sum to $BACKUP_PATH | |
| fi |
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