How does Atlas detect if my Objective-C `xcodebuild` command is hanging?

Atlas's `bash` tool executes your `xcodebuild` command with a default timeout. If `xcodebuild` doesn't complete within this period, Atlas terminates it and analyzes the output to determine if it was genuinely slow or waiting for interactive input, providing this diagnosis in the `shell_metadata`.

What should I do if Atlas says my `pod install` is 'blocked on interactive input'?

If Atlas reports `pod install` is blocked, it means CocoaPods is waiting for your input. Re-run the command with non-interactive flags, such as `atlas bash "pod install --no-repo-update --no-integrate"`, to bypass these prompts and allow it to complete automatically.

Can Atlas help with slow `clang-format` runs on my Objective-C files?

Yes, if `clang-format` is genuinely slow on a large Objective-C codebase, Atlas will time it out and suggest increasing the timeout. You can then re-run with `atlas bash --timeout [milliseconds] "clang-format -i MyFile.m"` to allow sufficient time for completion.

How do I know if I accidentally stopped an Objective-C command run by Atlas?

If you manually interrupt a command running through Atlas, the `shell_metadata` block in the output will explicitly state 'User aborted the command'. This distinguishes your action from an automatic timeout by Atlas.

Does Atlas make changes to my Objective-C project without my permission?

No, Atlas operates with strict permission controls. Any proposed changes to your `.h` or `.m` files, `Podfile`, or `.xcodeproj` are presented as a unified diff for your review and explicit approval before being written to disk.

What is the default timeout for commands run by Atlas in Objective-C projects?

The default timeout for commands executed via Atlas's `bash` tool is 30 seconds. This can be overridden using the `--timeout` flag with a value in milliseconds for longer-running Objective-C tasks.

Diagnose a Hanging or Long-Running Command in Objective-C with Atlas in 2026

In 2026, Objective-C developers can efficiently diagnose hanging or long-running commands like `xcodebuild test` or `pod install` using Atlas. Atlas's `bash` tool executes commands with a timeout, and if the command exceeds this limit, it provides a clear diagnosis: either the command is genuinely slow and needs a larger timeout, or it is silently blocked on interactive input, requiring non-interactive flags.

How Atlas Diagnoses Hanging Objective-C Commands

Atlas streamlines the diagnosis of unresponsive Objective-C build or script commands by wrapping them with its `bash` tool, which includes a default timeout of 30 seconds. When a command like `xcodebuild test` or `pod install` exceeds this limit, Atlas automatically terminates it and analyzes the exit condition.

When you execute an Objective-C related command through Atlas, such as `atlas bash "xcodebuild test -workspace MyProject.xcworkspace -scheme MyScheme"`, Atlas monitors its execution time. If the command does not complete within the configured timeout, Atlas intervenes. It provides a `shell_metadata` block in its output, explicitly stating whether the command was terminated due to a timeout or, crucially, if it was likely blocked waiting for interactive input. This immediate feedback is invaluable for Objective-C developers dealing with complex build systems or dependency management with `CocoaPods`.

Identifying Blocked Input in Objective-C Tooling

A common cause for seemingly 'hanging' Objective-C commands in 2026 is a silent prompt for user input, especially with tools like `CocoaPods` or `xcodebuild`. Atlas's diagnostic output will explicitly flag this condition, preventing wasted time waiting for an invisible prompt.

If Atlas's `shell_metadata` indicates that a command was 'blocked on interactive input', it means the Objective-C tool, such as `pod install` or a custom build script, was waiting for a 'yes/no' confirmation or other user input that was not provided. For instance, `CocoaPods` might prompt for a specific action if a `Podfile.lock` is out of sync. To resolve this, you would re-run the command with appropriate non-interactive flags. For `CocoaPods`, this might involve `atlas bash "pod install --no-repo-update --no-integrate"` or similar flags to bypass prompts. For `xcodebuild`, ensuring CI-friendly flags are used, like `-quiet` or `-destination 'platform=iOS Simulator,name=iPhone 15'`, can prevent unexpected interactive pauses.

Handling Genuinely Slow Objective-C Operations

For Objective-C operations that are genuinely time-consuming, such as a large `xcodebuild` compilation or a comprehensive `clang-format` run over thousands of files, Atlas provides clear instructions to adjust the timeout. You can easily extend the default 30-second limit to accommodate these longer processes.

If Atlas reports that a command was terminated due to a timeout but explicitly states it was *not* blocked on interactive input, it signifies a genuinely long-running process. This is common in Objective-C projects with extensive test suites run by `xcodebuild test` or when `clang-format` is applied to a large codebase. The Atlas output will suggest retrying the command with a larger timeout value, specified in milliseconds. For example, if `xcodebuild test` takes 5 minutes, you might re-run it as `atlas bash --timeout 300000 "xcodebuild test -workspace MyProject.xcworkspace -scheme MyScheme"`. This allows Atlas to monitor the command for a more appropriate duration without prematurely terminating it.

Reviewing and Approving Atlas Actions in Objective-C Workflows

Atlas prioritizes safety and transparency in Objective-C development workflows. Before any changes are written to your `.h` or `.m` files, or any commands are executed, Atlas presents a unified diff for your approval, ensuring you maintain full control over your codebase in 2026.

Every action Atlas proposes, whether it's modifying an Objective-C header to annotate nullability for Swift bridging or running `clang-format` across multiple `.h` and `.m` files, is permission-gated. Atlas first drafts a plan in a read-only agent. When it's ready to make changes or execute commands, it asks for your explicit approval. For file edits, it computes a unified diff, similar to `git diff`, and surfaces it for your review. This ensures that even when diagnosing and resolving hanging commands, you have a clear understanding and final say on any modifications or subsequent actions Atlas takes within your Objective-C project, including those affecting your `Podfile` or `.xcodeproj`.

Step by step

01Run your potentially hanging Objective-C command through Atlas's bash tool, for example: `atlas bash "xcodebuild test -workspace MyProject.xcworkspace -scheme MyScheme"`.
02Examine the `shell_metadata` block in Atlas's output when the command is killed by a timeout.
03If the message indicates 'blocked on interactive input', identify the specific Objective-C tool (e.g., `CocoaPods`, `xcodebuild`) and its non-interactive flags (e.g., `--no-input`, `-y`, CI mode).
04Re-run the command with the appropriate non-interactive flags, for example: `atlas bash "pod install --no-repo-update"`.
05If the message indicates a genuine timeout (not blocked on input), retry the command with a larger timeout value in milliseconds, as instructed: `atlas bash --timeout 600000 "xcodebuild test -workspace MyProject.xcworkspace -scheme MyScheme"`.
06If you manually aborted the command, confirm the `shell_metadata` states 'User aborted the command' to distinguish it from an Atlas-imposed timeout.

Frequently asked questions

How does Atlas detect if my Objective-C `xcodebuild` command is hanging?: Atlas's `bash` tool executes your `xcodebuild` command with a default timeout. If `xcodebuild` doesn't complete within this period, Atlas terminates it and analyzes the output to determine if it was genuinely slow or waiting for interactive input, providing this diagnosis in the `shell_metadata`.
What should I do if Atlas says my `pod install` is 'blocked on interactive input'?: If Atlas reports `pod install` is blocked, it means CocoaPods is waiting for your input. Re-run the command with non-interactive flags, such as `atlas bash "pod install --no-repo-update --no-integrate"`, to bypass these prompts and allow it to complete automatically.
Can Atlas help with slow `clang-format` runs on my Objective-C files?: Yes, if `clang-format` is genuinely slow on a large Objective-C codebase, Atlas will time it out and suggest increasing the timeout. You can then re-run with `atlas bash --timeout [milliseconds] "clang-format -i MyFile.m"` to allow sufficient time for completion.
How do I know if I accidentally stopped an Objective-C command run by Atlas?: If you manually interrupt a command running through Atlas, the `shell_metadata` block in the output will explicitly state 'User aborted the command'. This distinguishes your action from an automatic timeout by Atlas.
Does Atlas make changes to my Objective-C project without my permission?: No, Atlas operates with strict permission controls. Any proposed changes to your `.h` or `.m` files, `Podfile`, or `.xcodeproj` are presented as a unified diff for your review and explicit approval before being written to disk.
What is the default timeout for commands run by Atlas in Objective-C projects?: The default timeout for commands executed via Atlas's `bash` tool is 30 seconds. This can be overridden using the `--timeout` flag with a value in milliseconds for longer-running Objective-C tasks.

Try Atlas in your terminal

The terminal-native AI coding agent. Free core, single binary.

Install Atlas

Related guides

Diagnose a Hanging or Long-Running Command with Atlas in 2026

How to diagnose a hanging command with Atlas in 2026: the bash tool races every command against a timeout and tells you whether it is slow or blocked on input.

Debug a single failing test in Objective-C with Atlas in 2026

In 2026, Objective-C developers use Atlas to efficiently debug single failing XCTest cases. Atlas leverages xcodebuild test, LSP, and git for precise, permission-gated fixes.

Run Atlas Headless in CI for Objective-C in 2026

Automate Atlas sessions in your Objective-C CI pipelines for machine-readable output. Integrate with XCTest, CocoaPods, and clang-format for efficient, non-interactive code tasks.

Automate GitHub Issue and Pull Request Triage in Objective-C with Atlas in 2026

Streamline GitHub issue and PR triage for Objective-C projects using Atlas in 2026. Automate responses, enforce safety, and integrate with your xcodebuild test and CocoaPods workflows.

Review a Pull Request in Objective-C with Atlas in 2026

Streamline Objective-C pull request reviews in 2026 with Atlas. Catch subtle bugs by examining full file context, checking `findReferences` for signature changes, and running `XCTest`.

Self-review your working diff before committing in Objective-C with Atlas in 2026

Catch your own mistakes in Objective-C code before they reach a reviewer or CI. Atlas helps Objective-C developers in 2026 self-review uncommitted diffs, leveraging XCTest, CocoaPods, and clang-format for a robust

Write Unit Tests for Untested Objective-C Code with Atlas in 2026

Learn how Atlas helps Objective-C developers in 2026 write XCTest unit tests for existing modules, matching repo conventions and using `xcodebuild test` and `clang-format`.

Document a module with a README in Objective-C with Atlas in 2026

In 2026, Atlas helps Objective-C developers generate accurate READMEs for modules by reading .h and .m files, enumerating APIs, and verifying code samples with bash.

Browse this resource hub