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What is the difference between crontab and etc crontab?
The difference is that the crontab command is the interface provided by the system for users to manipulate their crontabs. The /etc/crontab file is a special case file used to implement a system-wide crontab. /var/spool/cron/crontabs/$USER (or whatever the path happens to be) is an implementation detail.
What is var spool cron?
/var/spool/cron is where the individual user crontabs live. As user, crontab -e edits the corresponding file in /var/spool/cron . /etc/cron. d is a directory that is scanned for modular crontab files. The syntax is slightly different for files in that directory.
What is the use of ETC cron D?
The run-parts command run scripts or programs in a directory via /etc/crontab file: /etc/cron. d/ Put all scripts here and call them from /etc/crontab file.
What’s the difference between a user cron table and a system cron table?
Adding system defined cron jobs You can create a cron file in the cron. The only difference with user defined cron jobs is that you will have to specify a user that will run the cron command.
What are crontab files?
A crontab file is a simple text file containing a list of commands meant to be run at specified times. It is edited using the crontab command. The cron daemon checks a user’s crontab file regardless of whether the user is actually logged into the system or not.
What kind of file is etc cron daily?
Cron is a system daemon used to execute desired tasks (in the background) at designated times. A crontab file is a simple text file containing a list of commands meant to be run at specified times. It is edited using the crontab command.
What’s the difference between / etc / cron.d and / var.cron?
/var/spool/cron is where the individual user crontabs live. As user, crontab -e edits the corresponding file in /var/spool/cron. /etc/cron.d is a directory that is scanned for modular crontab files.
What’s the difference between crontab and / etc / cronjob?
The difference is that the crontab command is the interface provided by the system for users to manipulate their crontabs. The /etc/crontab file is a special case file used to implement a system-wide crontab. /var/spool/cron/crontabs/$USER (or whatever the path happens to be) is an implementation detail.
Can you manually create crontab files in / var / spool / Cron / Crons?
Last edited by drManhattan; 01-03-2011 at 06:34 AM. Don’t manually create crontab files inside /var/spool/cron/crontabs. They get created using the crontab command, either when logged in as the user (server_user) or as root using the -u option. It’s not advised according to the man page.
Why do I need a file in / etc / cron.d?
So, if you need environment variables to be loaded, use /etc/crontab, if you don’t, then you can go with a file in /etc/cron.d. Also a reason for putting a file in /etc/cron.d can be, as pointed out in the man page, a finer scheduling control, which you also have in /etc/crontab (but that includes the environment variables).