chmod 750 — what rwxr-x--- means
750
rwxr-x---
The owner can read, write, and execute; the group can read and execute; others are locked out entirely.
Permission breakdown
When to use 750
Directories and scripts shared inside a team or service group but hidden from everyone else on the machine. A typical choice for an application directory owned by a deploy user and run by a service group.
Set it with chmod
Apply this permission to a file:
chmod 750 filename
Or apply it recursively to a directory and everything inside it:
chmod -R 750 directory/
Other common permissions
Or build any permission with the interactive chmod calculator.