Let's see how to display yesterday's date with the date command.
On MacOS, we pass the following command:
date -v -1d +'%Y-%m-%d'
On Linux:
date -d 'yesterday' +'%Y-%m-%d'
date -v -1d +'%Y-%m-%d'
date -d 'yesterday' +'%Y-%m-%d'
There may still be some old programs in some places, which can only run the old system. But you want to be able to execute and install some desired packages, you may try this method. Please note that if this system is important to you, please evaluate it yourself. It is recommended that you have a Docker environment and have a backup image before trying it.
rsnapshot is a rsync-based tool that can perform snapshot incremental backups. However, we installed which rsnapshot in CentOS. Why is there no such command? There is no way to install it with yum install rsnapshot?
Not sure who will use it, but I encountered it myself, because my home is a floating IP. A software I installed cannot detect that the ppp0 network card is an external network, so changing the name can trick him into successfully installing it.
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