How to run linux commands using cron - cron

Question

I have a couple of linux commands I want to run everyday in the morning once using cron. Not sure how to do this though.
I understand that this needs to be done using shell, but I don't know how to do all this in linux. I will be able to create cron using cpanel though...
These are the commands
rm -rf <directory>
mkdir <directory>
chmod 777 <directory>

Answer 1

You can create a shell script with this commands in a file script.sh, for example:
#!/usr/bin/bash
rm -rf <directory>
mkdir <directory>
chmod 777 <directory>
<others commands or logical instructions>...
In linux you can add a cron job in crontab, with crontab -e command, or in /etc/cron.d directory. The difference is that with command crontab -e the cron job will be set to user that execute crontab -e and add a cron job file right in cron.d you will need to put the user ahead the command of cron job.
Examples of cron jobs to be executed at 06:00 am.
With crontab -e:
0 6 * * * /usr/bin/bash /path_to_script/script.sh
Creating a file in /etc/cron.d:
0 6 * * * root /usr/bin/bash /path_to_script/script.sh
Alternatively you can just put the commands in your cron job as:
0 6 * * * rm -rf <directory> && mkdir <directory> && chmod 777 <directory>
Attention: remember to put the absolute path to directories that want to remove or create
PS: you can make your scripts in any language and use shell calls, as php with shell_exec() function or system() function of perl.