Useful handy commands for salesforce developers

1. Delete the records in object from Developer console 

Delete[Select id from Account limit 10000];

2. Abort the Batch jobs from Developer console

for(AsyncApexJob job:[SELECT Id, Status FROM AsyncApexJob WHERE Status IN (‘holding’,’Queued’,’Preparing’)])
System.abortJob(job.id);

3. Delete all Scheduled jobs from salesforce developer console anonymous window

for(CronTrigger CT: [Select Id from CronTrigger Limit 100])
System.abortjob(CT.Id);