crontab 定时任务报错 java: command not found

在原来服务器上写的定时任务，在任务转移之后定时任务不能成功执行，脚本没问题，用 sh 命令可以执行，但是目标地点没有数据，日志显示报错 ：

From [email protected]  Wed Jun 26 16:11:01 2019
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Subject: Cron  /home/data/datax/interfaces/t_interfaces_all.sh >/home/data/datax/interfaces/file.txt
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Date: Wed, 26 Jun 2019 16:11:01 +0800 (CST)

/bin/sh: java: command not found
/bin/sh: java: command not found
/bin/sh: java: command not found

发现是因为缺少环境变量，需要在 crontab 命令中指定环境变量位置，改了命令就可以了。

0 2 * * * . /etc/profile;sh /home/data/datax/interfaces/t_interfaces_all.sh