A detached HEAD in Git means you're no longer on a branch but instead directly referencing a specific commit. This often happens when you checkout a commit hash, a tag, or a remote-tracking branch without creating a new branch first.

While in this state, Git lets you make changes and even commit, but those commits aren’t tied to any branch. That means they can be lost if you switch away without saving them to a branch.

If you want to keep the changes, simply run git checkout -b my-new-branch to anchor your work to a new branch. Otherwise, you can safely return to a branch like main using git checkout main. Detached HEAD mode is safe for browsing history or testing code, but if you're planning to make changes, switch or create a branch to avoid losing your work. https://perimattic.com/git...

The "exec format error" typically means your system is trying to execute a file that doesn’t match its expected format or architecture. This is common when running compiled programs built for a different CPU type—like executing an x86_64 binary on an ARM machine.

Another frequent cause is an improperly formatted script. If a script doesn’t begin with a valid shebang line (e.g., #!/usr/bin/env bash), the system won’t know how to run it and will throw this error.

To troubleshoot, use file to check the binary’s architecture, and verify it matches your system’s with uname -m. For scripts, ensure they start with the correct shebang and have executable permissions (chmod +x script.sh). If it’s a binary issue, rebuild the program for your current architecture or use a compatible runtime or emulator. https://perimattic.com/fix...

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An "exec format error" typically occurs when a system attempts to execute a binary file that isn't compatible with the current operating system or CPU architecture. This error is common on Unix-like systems, such as Linux, and often surfaces when running scripts or compiled programs from another platform.

The root cause usually lies in architecture mismatches—for example, trying to run an x86_64 (64-bit) binary on an ARM-based system like a Raspberry Pi, or executing a Windows binary on a Linux machine. You might also see this error if you forget to add a proper shebang (#!) line at the top of a script, which tells the shell how to execute the file. Read more at https://perimattic.com/fix...