Mention the reason of space after "["

[imhosseinzadeh]

Hi, I hope you have a good day.

In section 105.2 Customize or write simple scripts, it is worth mentioning why [condition ] does not work.

Suggested text:

When using [ $kernel = "Linux" ], you might wonder why there must be a space after the [ character. This is because [ is not just a syntax element, but an actual program itself. Check type [ and which [.
Just like when you type cd /home and ls /tmp not cd/home or ls/tmp. You need spaces to separate the command from its arguments.