Claude Code
deployment
Permission Denied When Writing Files
Application attempts to write files (logs, uploads, caches) but fails with permission denied errors. The user running the application doesn't have write permissions to the target directory. Works in development where user has full permissions but fails in production.
This commonly occurs with log files, uploaded files, or temporary cache directories.
Error Messages You Might See
java.io.IOException: Permission denied
Cannot write to file: access denied
Failed to create log file: permission denied
Common Causes
- Target directory owned by different user, application user lacks write permission
- Directory permissions too restrictive (755 prevents write by non-owner)
- Parent directory doesn't have execute bit, preventing access to subdirectories
- SELinux or AppArmor policies blocking file access
- Disk full, preventing new writes despite having permissions
How to Fix It
Check permissions: ls -la /path/to/dir. Change if needed: chmod 755 or chown to correct user. Ensure application user is owner or in group: chown app:app /logs. Create directories with correct permissions at startup. Use world-writable temp directories (/tmp) if needed. Run with sudo or correct user: sudo -u app java -jar app.jar
Real developers can help you.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
BurnHavoc
Been around fixing other peoples code for 20 years.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
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I'll fill this later
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software.
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
Expertise:
💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
🖋️ Sharing insights through technical writing, blogging, and open-source contributions.
🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development.
🌟 Open source contributions on Github & StackOverflow for Flutter & Dart
🎖️ Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How to check file permissions?
ls -l shows permissions: rwx for owner, group, others. First digit (1-9) is: d (dir), r (read), w (write), x (execute).
How to fix permission denied?
Change ownership: sudo chown app:app /path. Change permissions: chmod 755 /path. Format: chmod u+rw,g+r,o+r /path
What user should own application directories?
Create dedicated user (app). Change directory ownership: chown -R app:app /app. Run with that user: sudo -u app