1. 编写一个简单的python程序test.py
print('hello, crontab!')
print('-'*50)
print('hello, crontab')
2. 使用test.sh文件执行python程序(./test.sh)
#!/bin/sh
cd `dirname $0` || exit 1
python test.py >> run.log 2>&1
3. 添加任务到crontab中定时执行(每分钟执行一次)
# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h dom mon dow command
1. * * * * /home/python/python/learn/test.sh >> /home/python/python/learn/crontab.log 2>&1
5. 使用tail -f run.log 动态查看日志信息
6. contab -e 进入删除任务信息可取消定时任务