Liangxu Linux

Apr 20, 2026 · Operations

How to Recover a Broken chmod Command After Setting Permissions to 000

When a mistaken chmod 000 renders the chmod binary unusable, this guide explains why the error occurs and walks through six practical recovery methods—including Perl, Python, scp, busybox, LD_PRELOAD, and LiveCD—plus preventive tips to avoid repeating the mistake.