chmod 750 vs 755
| Property | chmod 750 | chmod 755 |
|---|---|---|
| Octal | 750 |
755 |
| Symbolic | rwxr-x--- |
rwxr-xr-x |
| Owner | read/write/execute | read/write/execute |
| Group | read/execute | read/execute |
| Others | no access | read/execute |
| Risk Level | Low Risk | Low Risk |
| Typical Use | Application directories shared with a specific service group | Standard Linux directories and folder structures |
Key Difference
- Others: chmod 750 grants no access (0), while chmod 755 grants read/execute (5).
Which Should You Use?
The distinction between chmod 750 and chmod 755 revolves around public visibility. Both modes grant full permissions (read, write, execute) to the directory owner, and both allow group members to read and traverse inside. However, chmod 755 allows all other system users (the "others" class) to enter and inspect the directory, while chmod 750 completely shuts out other users (giving them 0 access). Mode 750 is an excellent hardening practice for application code and internal services on multi-user servers where you want the web daemon group to access application files without exposing them to other human or service accounts on the host. If your web daemon belongs to the directory group, 750 delivers airtight isolation.
Frequently Asked Questions
Is 750 more secure than 755?
Yes, 750 is more secure because it prevents unprivileged users outside the designated group from browsing directory contents or accessing scripts.
Can I convert 750 to 755?
Yes. To make a 750 directory accessible to other users, run "chmod 755 directory" or "chmod o+rx directory".
Which is better for web servers?
If your web server user (such as www-data) is a member of the directory group, 750 provides superior security. If the web server runs as an independent user outside the group, 755 is required to prevent 403 Forbidden errors.
Related Permissions & Comparisons
Read in-depth breakdowns for chmod 750 (rwxr-x---) and chmod 755 (rwxr-xr-x), or browse other permission comparisons: