ubuntu上使用crontab定时执行python程序

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

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