I want a cronjob to run every one hour randomly. (i.e if the first job runs at 58 minutes,the second job should run at 47 minutes and the third one at 52 minutes and so on) But this should run randomly for everyone hour. Is there a way to do this?
You could run a job every hour, on the hour, that sleeps up to 3,599 seconds and then executes your script:
0 * * * * /path/to/perl -e 'sleep int rand 3600' && /path/to/yourScript
PHP if you prefer that to
0 * * * * /path/to/php -r 'sleep(rand(0,3599));' && /path/to/yourScript
You can find the path to