In GNOME Terminal, the familiar Ctrl+C shortcut is not the normal way to copy selected text. It has a command-line meaning and can interrupt the foreground program. If a repair or diagnostic command is still running, use the terminal's copy action deliberately.

Capture the useful block

First confirm that the application is GNOME Terminal; other terminal programs can have different shortcuts. Scroll to the error and select the relevant text with the mouse. Include the command that was run, the first meaningful error and any final status message that belongs to the same attempt.

Use the selection's context menu to choose Copy, or press Ctrl+Shift+C. Paste the text into a local draft using that destination application's normal paste command. Copying the selection does not require terminating the command that produced it.

Read the draft before sharing it. Remove passwords, tokens and confidential document contents, and replace private paths or account names consistently where they are not needed. Preserve punctuation, error codes and line order so the recipient can distinguish separate messages.

Keep copying and executing separate

GNOME Terminal uses Ctrl+Shift+V for pasting into the terminal. That is different from placing text into a support note. Click the intended destination before pasting, especially when the clipboard contains commands, multiple lines or a trailing newline.

Review any suggested command as text before putting it into a live terminal. Confirm which computer, directory and account it applies to. Do not paste a whole support conversation into the command prompt merely to capture it there.

Finally compare the draft with the original output and note whether the process finished, remained active or was deliberately cancelled. If Ctrl+C was already pressed, say so; an interrupted attempt can produce a different final message from a completed one. A clear text record with that context is more useful than an isolated final line whose execution history is unknown.

Sources: GNOME documentation.