how to delete directories that all start with dir... using bash scripting or any command with the right options #commandline #bash #scripts #cron

how to delete directories that all start with dir... using bash scripting or any command with the right options
i created directories using crontab but don't know how to delete them there are so many and they all start with dir(random numbers),I cant use rmdir bcs i dont know which option i should use (im us...
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