在运行cron作业时拒绝权限

Question

我有一个按计划每4 mins.Cron运行一次的cron作业，但是它未能执行它假定为run.Cron规则的.sh文件，如下所示：

*/15 * * * * cd /var/www/html/etl_project && ./run_etl_incomplete.sh >> /var/www/html/etl_project/cron_log.txt 2>&1

在cron_log.txt中，我得到了以下权限拒绝错误：

/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied
/bin/sh: 1: ./run_etl_incomplete.sh: Permission denied

Answer 1

我假定您正在为这个cron使用的是您自己的个人用户，它没有执行文件的权限。该文件可能是以根用户或其他用户的身份创建的，因此，凭据不会被设置为允许用户执行。

首先-尝试检查文件上设置了哪些权限。

ls -l /var/www/html/etl_project/ | grep run_etl_incomplete.sh

检查输出以查看谁是所有者和组以及设置了哪些权限。

为了使文件可执行-

chmod +x /var/www/html/etl_project/run_etl_incomplete.sh

只有当您首先拥有正确的权限(例如，如果您的用户是组的一部分)来修改文件时，这才能起作用。一旦文件成为可执行文件，您的cron将运行。