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![](https://img-blog.csdnimg.cn/af086d12f4144b568adbbdd2c33b76e7.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_8,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/398124dd0bc04742b7445c52424b09e9.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_11,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/eec8749a5d50469fb735e6db5f9fc253.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_9,color_FFFFFF,t_70,g_se,x_16)
每一分钟调用一次 ls -l /etc/ > /tmp/to.txt
crontab -e #进行编辑
*/1**** ls -l /etc/ > /tmp/to.txt
*/1 #代表每一分钟执行一次
*/1* #第二个*代表一天中的某个小时
![](https://img-blog.csdnimg.cn/3764900de1c74248b5a043ceca8ba9e2.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_16,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/00324fba68f5456fb2eeab74f1bd7991.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_13,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/298eb46fc58f42769e07a7a9726708b0.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_16,color_FFFFFF,t_70,g_se,x_16)
案例2:写一个脚本
vim my.sh
date >> /home/mycal
cal >> /home/mycal
crontab -e
*/1**** /home/my.sh #需要保证my.sh有可执行权限
![](https://img-blog.csdnimg.cn/7b21fee363de42a682a680b57247431c.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_16,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/7cfda0365c934f67b527d57a52ca0716.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_15,color_FFFFFF,t_70,g_se,x_16)
![](https://img-blog.csdnimg.cn/40fd9e0990e7484898e21f7a46029628.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYUZha2VQcm9ncmFtZXI=,size_15,color_FFFFFF,t_70,g_se,x_16)
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