Processes

A live list of every process from /proc, with the total CPU and RAM use above it.

• Columns: PID, name, CPU percentage and resident memory. Sort with c, m, p or n, or by clicking a column header; sorting again reverses the order.
• Search: / filters by name, PID or command line, case-insensitively.
• Kernel threads: v hides or shows them.
• Details: Enter opens the selected process: its name, command line, state, parent PID, CPU and memory, and whether it is a kernel thread.

Pinning

P pins the selected process to the top of the list; up to 8 can be pinned, in your own order (Shift+↑ / Shift+↓, or the ▲ / ▼ controls at the end of a pinned row). Sorting applies to the rows below them. During a search, pinned processes that do not match stay visible but dimmed. Pinned processes also appear on the Overview.

A pin follows the process identity, (PID, start time), so a new process that reuses the PID never inherits it. A pinned process that exits is shown as exited for a few seconds and cannot be signaled.

Signals

T requests SIGTERM and K requests SIGKILL for the selected process. Nothing is sent until you confirm, and Cancel is the default.

When you confirm, tuxctl opens a pidfd for the process and checks that its start time still matches the one you saw before sending the signal through that pidfd. A process that exited, or a new process that took its PID, is never signaled. If pidfds are not available, the signal is refused.

Signaling other users’ or privileged processes follows the normal Linux permission rules.