FAQ - Frequently Asked Questions

Setting File Permissions

To set file permissions:

1. Login with your FTP client
2. Open the directory where the file you wish to set permissions on resides
3. Right click on the file and select CHMOD
A box similar to the one above will appear

Observe how you can "select" the individual permissions you want, or simply enter the 3 digit number if you know what it is. Most instructions included with downloaded scripts will tell indicate this to you.

By default, all files uploaded to the server automatically have permissions set to 644. The setting 644 is relatively safe, as it provides "Read" and "Write" access to the owner, while limiting the rest of the public to "Read Only" access.

When setting permissions for cgi scripts, the most common permissions setting is 755. 755 allows the owner "Read and Write" access, while allowing the Group and Public "Read and Execute" permissions. So what are we actually saying? In short, when users access your cgi script, the server has been instructed to grant them permissions to "Read and Execute" it. Sound scary? It's not actually…

Remember that a script is a program that must be processed by the server. As long as the script is written properly, you can safely allow users to execute it, and thus providing the desired results. For example, if they wanted to post a message to your wwwboard discussion forum, then they would need these permissions to execute wwwboard.pl, which would write their new message to an html file, which is displayed on the main forum. The new message would reside in a directory on your site so other users could view it. Most cgi, perl and other scripts you'll be installing come complete with instructions telling you which permissions you'll need to set them to.

Related Topics:
The path to Perl
The path to Sendmail
Where to place your CGI scripts
Setting directories within your cgi scripts
Warnings and Security Issues
Understanding File Permissions
SSI and .shtml