Can you export the htop process snapshot to a text file?

The htop interactive process viewer for Linux does not feature a built-in, one-click button or shortcut to directly export its current live display snapshot into a text file. While htop is designed strictly for real-time, interactive system monitoring within the terminal, users can easily achieve the same result by leveraging standard Linux command-line alternatives. This article covers how to use native tools like ps and top in batch mode, or terminal redirection tricks, to successfully save your current process snapshot to a reusable text document.

Alternative Methods to Export Process Snapshots

Since htop constantly refreshes and relies on terminal-specific formatting codes, exporting its exact interface directly from the UI isn’t supported. However, you can instantly capture your system’s current process state using the following standard terminal methods.

Method 1: Using the Standard top Command in Batch Mode

The traditional top utility includes a built-in “batch mode” specifically designed for outputting text directly to files without the interactive interface.

• Run the following command to capture a single snapshot: top -b -n 1 > process_snapshot.txt
• -b: Enables batch mode, which prevents the terminal screen from clearing and outputs raw text.
• -n 1: Instructs the tool to run for exactly one iteration (snapshot) and then exit.
• >: Redirects the output into a file named process_snapshot.txt.

Method 2: Using the ps Command for Clean Text Output

If you want a highly readable, static list of processes similar to what you see in htop, the ps command is the standard Linux tool for the job.

• To capture all running processes with detailed user and command information, run: ps aux > process_snapshot.txt
• To mimic the tree-view hierarchy often favored in htop, you can add the forest flag: ps axjf > process_tree_snapshot.txt

Method 3: Capturing the Terminal Screen Buffer

If you are already inside the htop interface and absolutely must capture what is currently on your screen, you can use your terminal emulator’s built-in features rather than htop itself.

• Scrollback Copy: Most terminal emulators (like GNOME Terminal, PuTTY, or iTerm2) allow you to use your mouse to select the visible text inside htop, right-click, and choose Copy. You can then paste this directly into a blank text file.
• Tmux / Screen Logging: If you are running htop inside a terminal multiplexer like tmux, you can enter copy mode (Ctrl+b, then [), select the text block, and pipe it to a file.