New task added in crontab not run

At about 8:10 AM, I edited crontab tasks with "crontab -e", added a simple task which should run at 8:20 AM.

00 3 * * * sh /home/als6fd/bin/run1.sh
20 8 * * * sh echo "hello">>/home/als6fd/ggfan/1.txt

But it did not run at 8:20 AM. What may cause this problem?

If I call "/sbin/service crond reload"开发者_运维百科, an error occurs.

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problem fixed: as current user does not have right to write to /home/als6fd/ggfan