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关于定时任务的问题
来源: 互联网 发布时间:2017-05-17
本文导语: 我用QT编了一个往数据库里写数据的程序。想用定时任务cron,root账户定时往数据库里写。但是总是提示我crontab设置失败。 以下是配置文件 # Edit this file to introduce tasks to be run by cron. # # Each task to run has to...
我用QT编了一个往数据库里写数据的程序。想用定时任务cron,root账户定时往数据库里写。但是总是提示我crontab设置失败。
以下是配置文件
# 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
*/2 * * * * /var/spool/cron/root/test/CrontabTest
以下是配置文件
# 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
*/2 * * * * /var/spool/cron/root/test/CrontabTest
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报什么错误啊
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执行命令:
crontab -e
直接在里面添加:
*/2 * * * * /var/spool/cron/root/test/CrontabTest > /var/tmp/test.log 2>&1
crontab -e
直接在里面添加:
*/2 * * * * /var/spool/cron/root/test/CrontabTest > /var/tmp/test.log 2>&1