Question

我有一个简单的shell脚本，每周备份一次整个www目录和单个数据库。它工作得很好..现在我想扩展它一点点，使它备份所有数据库，而不仅仅是一个。我怎么能这样做？

这是当前的脚本

#!/bin/bash
NOW=$(date +"%Y-%m-%d-%H%M")
FILE="backup.$NOW.tar"
BACKUP_DIR="/home/user/backups/"
WWW_DIR="/var/www/"

DB_USER="dbuser"
DB_PASS="dbpass"
DB_NAME="dbName"
DB_FILE="backup.$NOW.sql"

WWW_TRANSFORM='s,^home/user/www,'
DB_TRANSFORM='s,^home/user/backups,database,'


tar -cf $BACKUP_DIR/$FILE --transform $WWW_TRANSFORM $WWW_DIR
mysqldump -u$DB_USER -p$DB_PASS $DB_NAME > $BACKUP_DIR/$DB_FILE

tar --append --file=$BACKUP_DIR/$FILE --transform $DB_TRANSFORM  $BACKUP_DIR/$DB_FILE
rm $BACKUP_DIR/$DB_FILE
gzip -9 $BACKUP_DIR/$FILE

echo 'backup finished', $FILE

Answer 1

您可以简单地使用show databases命令。像这样读取for循环中的所有数据库并调用mysqldump命令

databases=`mysql --user=$DB_USER --password=$DB_PASS -e "SHOW DATABASES;" | tr -d "| " | grep -v Database`

for db in $databases; do
        echo "Dumping database: $db"
        mysqldump --force --opt --user=$DB_USER--password=$DB_PASS --databases $db > $BACKUP_DIR/`date +%Y%m%d`.$db.sql
done

Answer 2

#!/bin/bash

USER="root"
PASSWORD="PASSWord"
OUTPUT="/root"


rm "$OUTPUT/*gz" > /dev/null 2>&1

databases=`mysql --user=$USER --password=$PASSWORD -e "SHOW DATABASES;" | tr -d "| " | grep -v Database`

for db in $databases; do
    if [[ "$db" != "information_schema" ]] && [[ "$db" != _* ]] ; then
        now="$(date +'%d_%m_%Y_%H_%M_%S')"
        echo "Dumping database: $db"
        mysqldump --user=$USER --password=$PASSWORD --default-character-set=utf8 $db | gzip > $OUTPUT/$db.`date +%Y%m%d`.gz
    fi
done

Shell脚本备份所有数据库和www目录

2 个答案: