The fastest way to copy from Codeblocks Xterm
To copy output from Codeblocks Xterm, highlight the text with your mouse, right-click, and select Copy from the menu. The text goes into your clipboard and you can paste it anywhere — into a text editor, email, or another program. This works the same way as copying text from any other window on your computer.
If right-click does not show a menu, try holding Shift while right-clicking. Some terminal windows require this modifier key to display the context menu instead of sending the right-click to the running program.
On a Mac, use Command+C after selecting text instead of right-clicking. On Linux systems with Xterm, middle-click pastes what you just copied, which is useful for testing that the copy worked before you close the window.
Key Takeaways
- Highlight the text you want with your mouse, then right-click and choose Copy to send it to your clipboard.
- If the context menu does not appear, hold Shift while right-clicking, because some terminal configurations reserve right-click for the running program.
- On Mac, select the text and press Command+C instead of using the right-click menu.
- Middle-click in Xterm pastes your copied text, letting you verify the copy worked before you close the terminal.
- Text copied from Xterm can be pasted into any other program — text editors, browsers, email clients, and code editors all accept terminal output.
Selecting text that spans multiple lines
When your output runs across several lines, click at the start of the text you want, hold down the mouse button, and drag to the end. Release the mouse button when you reach the last character. The selected text appears highlighted, usually in a different color like white text on a dark background.
If you need to select from the middle of one line to the middle of another line further down, start your selection at the beginning of the first piece you want and drag all the way to the end of the last piece. Xterm selects everything in between, including the parts you do not need — you can clean that up after you paste it into your text editor.
For very long output that scrolled off the top of the window, scroll up in Xterm first to bring that text back into view, then select and copy. If the window does not scroll, the program running inside may not support scrollback, and you will need to run the command again or redirect its output to a file instead.
Copying output when the program is still running
You can copy text from Xterm while a program is still executing — the copy happens when ready and does not interrupt the program. This is useful when a long process is printing output and you want to grab part of it without waiting for the program to finish.
Be aware that if you select text while the program is actively writing to the screen, the selection may shift or the text may change as new output appears. For this reason, it often works better to wait for the program to complete, or to pause it if the program supports that (usually with Ctrl+Z or Ctrl+S).
If you need to save the entire output of a long-running program, consider redirecting it to a file instead of copying from the terminal. Run the command with > filename.txt at the end, and the output goes directly into a file you can open and copy from later without watching the terminal.
Pasting copied output into different programs
After you copy text from Xterm, you can paste it into a text editor like Notepad, Word, or VS Code by pressing Ctrl+V (or Command+V on Mac). The text appears exactly as it was in the terminal, including line breaks and spacing.
If you paste into a web form or email and the formatting looks wrong — extra spaces, strange line breaks, or text that wraps oddly — the receiving program may be interpreting the terminal output differently than you expected. Paste into a plain text editor first, clean up the formatting if needed, and then copy from there into the final destination.
Some programs like code editors and IDEs have special paste options. In VS Code, for example, you can right-click and choose Paste or use Ctrl+V, and the editor handles terminal output the same way as any other text. If the output contains special characters or escape codes (invisible formatting that terminals use for colors), those usually get stripped when you paste into a regular text editor.
Copying output when the terminal window is small or crowded
If your Xterm window is small and the output wraps awkwardly across the screen, the text is still selectable — just click and drag as normal. The selection follows the actual text, not the visual layout, so if a line wraps to the next visual row, selecting across that wrap still captures the whole logical line.
When output is dense and hard to read on screen, you have two options: make the Xterm window wider or taller by dragging its edges, or select the text and paste it into a text editor where you can read it more comfortably. Many people find it easier to work with terminal output in a text editor anyway, because you can search, highlight, and rearrange without losing the original.
If the text is too small to read, you can usually increase the font size in Xterm by right-clicking and selecting a font size option, or by holding Ctrl and scrolling your mouse wheel up. Larger text is easier to select accurately and copy without accidentally including extra characters.
Troubleshooting when copy does not work
If right-clicking does not produce a menu, the program running inside Xterm may be capturing mouse events. Try pressing Shift+Ctrl+C instead, which is the keyboard shortcut for copy in many terminal emulators. If that does not work, try Shift with right-click, or check whether your terminal emulator has a different copy command in its menu bar.
If you select text but nothing appears to be highlighted, your terminal may be using a color scheme where the selection color is too similar to the text color. The text is still selected even if you cannot see it clearly — try copying anyway and pasting to confirm. If pasting produces nothing, the selection did not work and you should try selecting again more carefully.
On some systems, Xterm uses the middle mouse button for paste instead of Ctrl+V. If you copied text and Ctrl+V does not work, try middle-clicking in the destination window. If you do not have a middle mouse button, you can often simulate one by clicking the left and right buttons at the same time.
Using keyboard shortcuts instead of the mouse
If you prefer not to use the mouse, most terminal emulators support keyboard selection. Hold Shift and use the arrow keys to select text character by character, or hold Shift+Ctrl and press the right arrow to select word by word. Once you have selected what you need, use Ctrl+C or Shift+Ctrl+C to copy (depending on your terminal configuration).
This keyboard method is slower for large selections but useful when you want to copy a specific word or short phrase without reaching for the mouse. It also works better in remote terminal sessions where the mouse can be unreliable.
Frequently Asked Questions
Can I copy output that has already scrolled off the top of the window?
Yes, if Xterm supports scrollback. Scroll up using the scroll wheel or the scrollbar on the right side of the window to bring the old output back into view, then select and copy as normal. If scrolling does not work, the program may not have saved its output, and you will need to run the command again.
Does copying from Xterm include the colors and formatting?
No. When you copy text from Xterm, you get only the plain text characters. Colors, bold text, and other formatting are lost. If you need to preserve formatting, take a screenshot instead, or look for an option to export the terminal session to a file.
What if I accidentally copy the wrong text?
Just select the correct text and copy again. The new selection replaces what was in your clipboard. You can copy as many times as you need until you have the right text, then paste it into your destination.
Can I copy output from a remote terminal session over SSH?
Yes, the same copy-and-paste method works over SSH. Select, right-click, and copy from the remote Xterm window just as you would locally. The text goes into your local clipboard and you can paste it anywhere on your computer.
Why does my pasted text have extra line breaks or spaces?
Terminal output sometimes includes formatting characters or wrapping that does not translate cleanly to other programs. Paste into a plain text editor first, review the output, and clean up any unwanted breaks or spaces before copying it to its final destination.