what is a chron job?

[TechBoyJK]

what is a chron job?

 

[TechBoyJK]

A cron job is simply a command you normally run from a shell window that is periodically run at times you specifiy.

So a cronjob could be a command that looks at active TCP connections and emails the printout to me, scheduled at say midnight?

 

[RedFox1]

There's a software package called cron which lets you schedule tasks (any command or anything you can script can be added to cron)

Most linux distros ship with cron. The hub of it is a cron daemon that starts things according to the schedule you give it. It gets those tasks from cron tables (formatted text files). And the individual tasks are "cron jobs."

-Russ

 

[Nothinman]

A cron job (no 'h') is anything that runs perodically. It can be sh, perl, python, etc as long as it's runnable from the CLI it can be run inside cron.

 

[Need4Speed]

sounds like you get the idea..when i doubt "man <command>" or "man man"
when you dont have a *nix box handy...google "man <command>"

 

[skyking]

an example: I purchased one of those cheap dell servers last year, and it came with a second hard drive "free".
It has no raid controller, so I ghosted the server to the second drive.
I wrote a script that mounts the second drive daily, and copies over the databases, then unmounts the drive.
Another script does the same on a weekly basis for changes to the website files.
Both of these are "cron jobs", and are my poor man's raid.
I lost my primary drive to a UPS incident last week, and it was pretty painless to switch to the other drive.