When using scripts on your website, you will be required to set file permissions in order for your scripts to run properly on a Unix server. The most common setting for CGI/Perl scripts is 755. When working with scripts, you may receive an Internal Server Error when you try to run it. Many times, this error is caused by improperly set file
permissions.

Permissions:

- Read – 4 or r
- Write – 2 or w
- Execute – 1 or x
- None – 0 or -

- Read permissions are enabled with the number 4 or the letter r.

- Write permissions are enabled with the number 2 or the letter w.

- Execute permissions are enabled with the number 1 or the letter x.

- No permissions are enabled with the number 0 or a dash.

Each of these permissions will be set for each of the following:

- Owner
- Group
- Other
Below is an example of a script that requires the permissions to be set to 755:

7 – Represents the permissions for the Owner (you). The owner has been given Read, Write and Execute permissions. 4+2+1=7.

5 – Represents the permissions for the Group (individuals with access to your server). The Group has been given Read and Execute permissions. 4+1=5.

5 – Represents the permissions for the Others (website visitors). The Others have been given Read and Execute permissions. 4+1=5.

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