What is chmod, 755 and 644?
• Chmod stands for “Change Mode” and is the standard unix command used to change file and directory permissions. • 755 looks like this: rwxr-xr-x. That’s Owner (the first three) having read, write and execute permission, the unix group which the file belongs to (the second three) having read and execute permission, and everybody else (the last three) having read and execute permission. You are the owner, and the only one who should be able to modify this directory, so only you should have write access. • 644 looks like this: rwxr–r– That’s Owner (the first three) having read, write and execute permission, the unix group which the file belongs to (the second three) having only read permission, and everybody else (the last three) having only read permission. You are the owner, and the only one who should be able to modify this file, so only you should have write access. For example… Let’s say my page, http://www.sju.edu/~pdoshi/projects/something.html is giving me a 403 error. What I
