shell实现目录增量备份的示例代码
作者:小黑要上天
本文主要介绍了shell实现目录增量备份的示例代码,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
auto_backup_system.sh
#针对目录进行备份;每周1-6执行增量备份,每周日(值为:0 or 7)执行全备份
#!/bin/bash #Automatic Backup Linux System Files #By Author xiaoheiyaoshangtian #2024/x/x source_dir=($*) target_dir=/tmp year=$(date +%Y) month=$(date +%m) day=$(date +%d) week=$(date +%u) files=system_backup.tar.gz code=$? if [ -z $source_dir ];then echo -e "Please Enter File or Directory You Need to Backup:\n--------------------------------------------------\nExample $0 /boot /etc ......" exit fi #determin whether the target directory exists if [ ! -d $target_dir/$year/$month/$day ];then mkdir -p $target_dir/$year/$month/$day echo "This $target_dir/$year/$month/$day created successfully!" fi #exec full backup function command full_backup() { if [ "$week" -eq "0" ];then rm -rf $target_dir/snapshot cd $target_dir/$year/$month/$day tar -g $target_dir/snapshot -czvPf $files $(echo ${source_dir[@]}) [ "$code" == "0" ]&&echo -e "---------------------------------------\nfull_backup system files backup successfully!" fi } #perform incremental backup function command add_backup() { cd $target_dir/$year/$month/$day if [ -f $target_dir/$year/$month/$day/$files ];then read -p "$files already exists,overwrite confirmation yes or no(default yes)?:" sure if [ "$sure" == "no" -o "$sure" == "n" -o "$sure" == "N" -o "$sure" == "NO" -o "$sure" == "No" ];then sleep 1 exit 0 fi if [ $week -ne "0" ];then cd $target_dir/$year/$month/$day tar -g $target_dir/snapshot -czvPf $$_$files $(echo ${source_dir[@]}) [ "$code" == "0" ]&&echo -e "---------------------------------------\nadd_backup system files backup successfully!" fi else if [ $week -ne "0" ];then cd $target_dir/$year/$month/$day tar -g $target_dir/snapshot -czvPf $files $(echo ${source_dir[@]}) [ "$code" == "0" ]&&echo -e "---------------------------------------\nadd_backup system files backup successfully!" fi fi } full_backup add_backup
验证:
[root@logstash ~]# sh auto_backup_system.sh Please Enter File or Directory You Need to Backup: -------------------------------------------------- Example auto_backup_system.sh /boot /etc ...... [root@logstash ~]# [root@logstash ~]# sh auto_backup_system.sh /tmp This /tmp/2024/06/21 created successfully! tar: /tmp: Directory is new tar: /tmp/.ICE-unix: Directory is new tar: /tmp/.Test-unix: Directory is new tar: /tmp/.X11-unix: Directory is new tar: /tmp/.XIM-unix: Directory is new tar: /tmp/.font-unix: Directory is new tar: /tmp/2024: Directory is new tar: /tmp/2024/06: Directory is new tar: /tmp/2024/06/21: Directory is new /tmp/ /tmp/.ICE-unix/ /tmp/.Test-unix/ /tmp/.X11-unix/ /tmp/.XIM-unix/ /tmp/.font-unix/ /tmp/2024/ /tmp/2024/06/ /tmp/2024/06/21/ /tmp/snapshot /tmp/2024/06/21/system_backup.tar.gz --------------------------------------- add_backup system files backup successfully! [root@logstash ~]# [root@logstash ~]# sh auto_backup_system.sh /tmp system_backup.tar.gz already exists,overwrite confirmation yes or no(default yes)?:no [root@logstash ~]# [root@logstash ~]# sh auto_backup_system.sh /tmp system_backup.tar.gz already exists,overwrite confirmation yes or no(default yes)?: /tmp/ /tmp/.ICE-unix/ /tmp/.Test-unix/ /tmp/.X11-unix/ /tmp/.XIM-unix/ /tmp/.font-unix/ /tmp/2024/ /tmp/2024/06/ /tmp/2024/06/21/ /tmp/2024/06/21/2577_system_backup.tar.gz --------------------------------------- add_backup system files backup successfully! [root@logstash ~]#
[root@logstash tmp]# ls 2024 snapshot [root@logstash tmp]# [root@logstash tmp]# cd 2024/ [root@logstash 2024]# cd 06/21/ [root@logstash 21]# ls 2577_system_backup.tar.gz system_backup.tar.gz [root@logstash 21]#
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