从列表中备份目录的 Shell 脚本

Question

我有一个备份脚本可以完成这项工作，但需要很长时间才能完成，因为它会将用户目录逐一针对 DEV_Servers.txt 中的服务器列表进行压缩。

有没有一种方法可以同时对所有服务器列表运行 tar 命令，而不是逐一浏览列表？

#!/bin/ksh
print  "==========================================="
print  "Taking backup of Users dir"
print  "==========================================="

serverList="DEV_Servers.txt"
while read -r server;
do
    print
    print "==========================================="
    print "Taking Backup of Users:" $server
    ssh -o StrictHostKeyChecking=no -n $server "cd /opt/test/ ; tar -zcvf 'Users$(date '+%Y%m%d').tar.gz' Users"
done < "$serverList"

Answer 1

这是一个 Bash 脚本，它从文件中读取目录列表并为每个目录创建备份。该脚本将每个目录压缩为一个

.tar.gz

文件并将备份存储在指定的备份目录中。

脚本：

backup_dirs.sh

#!/bin/bash

# Variables
DIR_LIST="directories.txt"  # File containing list of directories to back up
BACKUP_DIR="backup"         # Directory to store backups
DATE=$(date +%Y-%m-%d)      # Current date for timestamping backups

# Create the backup directory if it doesn't exist
mkdir -p "$BACKUP_DIR"

# Check if the list file exists
if [[ ! -f "$DIR_LIST" ]]; then
    echo "Error: File $DIR_LIST does not exist!"
    exit 1
fi

# Backup each directory listed in DIR_LIST
while IFS= read -r DIR; do
    # Skip empty lines or commented lines
    [[ -z "$DIR" || "$DIR" =~ ^# ]] && continue

    # Check if the directory exists
    if [[ -d "$DIR" ]]; then
        # Get the base name of the directory
        DIR_NAME=$(basename "$DIR")

        # Create the backup file name
        BACKUP_FILE="$BACKUP_DIR/${DIR_NAME}_${DATE}.tar.gz"

        # Create the tarball
        tar -czf "$BACKUP_FILE" -C "$(dirname "$DIR")" "$DIR_NAME"
        echo "Backup of $DIR completed: $BACKUP_FILE"
    else
        echo "Warning: Directory $DIR does not exist. Skipping."
    fi
done < "$DIR_LIST"

echo "Backup process completed."