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How do I add a URL to a cron job?
Use the command line script ‘wget’ to run programs via http links. Using -O means that the output of the web request will be sent to STDOUT (standard output). >/dev/null 2>&1 will instruct standard output to be redirect to a black hole.
What Shell does Cron use?
Cron Uses /bin/sh By Default, Not Bash Bash ( /bin/bash ) is a common shell on most distros, and is an implementation of sh.
What does wget do in Linux?
Wget is the non-interactive network downloader which is used to download files from the server even when the user has not logged on to the system and it can work in the background without hindering the current process.
What do you need to know about Cron command?
Command. The software utility cron also known as cron job is a time-based job scheduler in Unix-like computer operating systems. Users who set up and maintain software environments use cron to schedule jobs (commands or shell scripts) to run periodically at fixed times, dates, or intervals.
Which is the easiest way to schedule a cron job?
As you can see, scheduling cron jobs is much easier. Also there are a few web-based crontab syntax generators available to make this job even easier. You don’t need to memorize and/or learn crontab syntax. The following two websites helps you to easily generate a crontab expression based on your inputs.
How does the cron daemon interpret crontab entries?
Most cron implementations simply interpret crontab entries in the system time zone setting that the cron daemon runs under. This can be a source of dispute if a large multi-user machine has users in several time zones, especially if the system default time zone includes the potentially confusing DST.
Where do I find the cron file on my computer?
A cron file is a simple text file that contains commands to run at a specific time. The default system crontab file is /etc/crontab and is located within a crontab directory, /etc/cron.*/. Only system administrators can edit the system crontab file.