I think you should do automatic backup. If it is my own code files and the like, I usually back them up manually at critical times. It is also simple, just execute cp -r. There is a problem with automatic backup. I don’t know when to back up, for example, I backed up for you in 10 minutes, but actually you want to go back to 1 hour ago, so what should I do, so I still prefer manual backup, after all, it is simple.
In addition, if you just want to compare whether two folders are completely consistent, I wrote a tool
sh#!/usr/bin/env bash
# 比较两个文件夹是否一致
# 计算每个文件文件的md5值,将所有的md5值写入一个文件中,最后再用md5比较这个文件是否一样
# mac系统下计算md5的值命令是md5,如果是linux,请换成md5sum
# 用法:sh is_same.sh dir1 dir2
if [[ $# != 2 ]]; then
echo "usage: sh is_same.sh <dir1> <dir2>"
exit 1
fi
# find查找文件,md5计算md5值,awk取出md5值,sort保证次序是一致的,将结果输出到文件中
find -type f -print | grep -v dir*.md5 | xargs md5 | awk '{print $NF}' | sort > temp.dir1.md5
find -type f -print | grep -v dir*.md5 | xargs md5 | awk '{print $NF}' | sort > temp.dir2.md5
# 比较两个文件是否相同,如果相同说明两个目录是一致的
md5sum1=$(md5 temp.dir1.md5 | awk '{print $NF}')
md5sum2=$(md5 temp.dir2.md5 | awk '{print $NF}')
if [[ $md5sum1 != $md5sum2 ]]; then
echo " and is different"
else
echo " and is same"
fi
# 删除临时文件
rm temp.dir1.md5
rm temp.dir2.md5
rsync + inotify
I think you should do automatic backup. If it is my own code files and the like, I usually back them up manually at critical times. It is also simple, just execute cp -r. There is a problem with automatic backup. I don’t know when to back up, for example, I backed up for you in 10 minutes, but actually you want to go back to 1 hour ago, so what should I do, so I still prefer manual backup, after all, it is simple.
In addition, if you just want to compare whether two folders are completely consistent, I wrote a tool
crontab+rsync
When both folders are local, if one is primary and the other is secondary, you should be able to use inotify + rsync
In addition, you can actually consider bit torrent sync or syncthing. Of course, this is mainly used when they are not on the same machine
Write a synchronization script and put it in crontab
If it is a file, you can use a hard link
Actually, I just want to ask, what is this requirement for...
For Dropbox, I used junction, just for links
rsync is awesome
rsync +1
cron +1