Linux automatically creates files named after today's date every day

One, create a shell script

vim /data/date/date.sh

#/bin/bash
DATE1=$(date +%F)
cd /data/date
echo $DATE1 >> /data/date/date.log
mkdir $DATE1

Two, grant execution permissions to the script

cd /data/date
chmod u+x date.sh  #使脚本具有执行权限
./date.sh  #执行脚本
##变绿代表拥有执行权限

Three, linux command to start timing

1. Install and start the corresponding software

yum install -y crond sendmail
systemctl restart crond
systemctl enable crond
systemctl restart sendmail 

2. Set timed tasks

crontab -e
或者 vim /etc/crontab

#####
0 0 * * *  /data/date/date.sh
分 时 日 月 周（0-6）【用户】 绝对路径脚本

#####
当用户是root时，需省略，否者会出现下图报错
/bin/sh: root: command not found

3. Load the configuration

systemctl reload crond

4. View timed tasks:

crontab -l