Linux Permission Denied — Cannot Execute Script Fix

Overview

Fix "Permission denied" when trying to run a script on Linux. The file lacks execute permission.

Key Details

• Error: Permission denied (when executing)
• Category: Linux Command Error
• Script/binary lacks execute permission
• Cannot run the file

Common Causes

• File does not have execute (+x) permission
• File downloaded from internet lost execute bit
• File system mounted with noexec option
• SELinux or AppArmor blocking execution

Steps

1. 1Add execute permission: chmod +x script.sh
2. 2Run with interpreter: bash script.sh (bypasses execute bit)
3. 3Check mount options: mount | grep noexec
4. 4Check SELinux: sestatus and audit log

Tags

More in Linux Command

Frequently Asked Questions