linux-cron-jobs

Queries crontab scheduled job configurations registered on a Linux system. Reads per-user crontab files from the /var/spool/cron/crontabs/, /var/spool/cron/, and /var/cron/tabs/ directories and returns the schedule and command as structured fields.

Command properties

Property	Value
Command type	Driver query
Required permission	Administrator
License usage	Counted
Parallel execution	Not supported
Distributed execution	Runs on Data Node (mapper)

Syntax

linux-cron-jobs

Output fields

Field	Type	Description
`user`	string	Owner of the crontab file. Extracted from the crontab file name.
`cron_schedule`	string	Cron schedule expression. Consists of 5 fields: minute, hour, day, month, and day of the week.
`cmd_line`	string	Command to run according to the schedule

Error codes

Parsing errors

Error code	Message	Description
95040	no-read-permission	A user without administrator privileges executed the command

Runtime errors

Error code	Message	Description	Action on error
-	-	An I/O error occurred while reading a crontab file	Aborts query execution

Description

The linux-cron-jobs command collects per-user scheduled job configurations from crontab directories on the Linux system. It searches the following directories in order:

/var/spool/cron/crontabs/ (Debian-based)
/var/spool/cron/ (Red Hat-based)
/var/cron/tabs/ (other distributions)

In each directory, it finds readable crontab files, then parses valid cron entries, excluding comments and blank lines. The cron expression (minute, hour, day, month, day of the week) and the command are separated and assigned to output fields.

Examples

Query all crontab scheduled jobs
```
linux-cron-jobs
```
Queries crontab scheduled jobs for all users registered on the system.
Query scheduled jobs for a specific user
```
linux-cron-jobs
| search user == "root"
```
Filters and queries only the crontab scheduled jobs of the root user.