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Letter keys instead of function keys

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h help, / search, s sort, t tree, z all, c command line, i swap in,
o swap out, F flush, k signal, q quit.
This commit is contained in:
Andy Dixon
2026-10-07 12:32:27 +01:00
parent ccbbd416b7
commit 4b11d955cb
4 changed files with 34 additions and 45 deletions
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main.go
+10 -28
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@@ -97,7 +97,7 @@ func sortIndex(name string) int {
func main() {
cfg := loadConfig()
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: swaptop [-d SECONDS] [-s COLUMN] [-t] [-z] [--version]\n\nhtop-style view of swap usage per process. Press F1 inside for keys.\n\n")
fmt.Fprintf(os.Stderr, "Usage: swaptop [-d SECONDS] [-s COLUMN] [-t] [-z] [--version]\n\nhtop-style view of swap usage per process. Press h inside for keys.\n\n")
flag.PrintDefaults()
}
delay := flag.Float64("d", cfg.Refresh, "refresh interval in seconds")
@@ -399,24 +399,6 @@ func (a *app) key(ev *tcell.EventKey) bool {
}
case tcell.KeyEscape:
a.view = viewList
case tcell.KeyF1:
a.view = viewHelp
case tcell.KeyF2:
a.askFlush()
case tcell.KeyF3:
a.searching = true
case tcell.KeyF5:
a.toggleTree()
case tcell.KeyF6:
a.cycleSort()
case tcell.KeyF7:
a.askSwapIn()
case tcell.KeyF8:
a.askSwapOut()
case tcell.KeyF9:
a.askKill()
case tcell.KeyF10:
return true
case tcell.KeyRune:
switch ev.Rune() {
case 'q':
@@ -515,7 +497,7 @@ func (a *app) askSwapIn() {
}
})
if err == nil {
set(fmt.Sprintf("Swapped in %s (%d) in %s. Its slots stay 'cached' until the kernel drops them or you flush (F2).",
set(fmt.Sprintf("Swapped in %s (%d) in %s. Its slots stay 'cached' until the kernel drops them or you flush (F).",
p.Comm, p.PID, time.Since(start).Round(100*time.Millisecond)))
}
return err
@@ -861,14 +843,14 @@ func (a *app) drawHelp() {
" magenta not owned by any process: tmpfs/shm files, or slots whose owner we cannot read",
"",
"Actions (each asks for confirmation)",
" F7 i swap in: fault every swapped page of the process back into RAM (reads /proc/PID/mem)",
" F8 o swap out: ask the kernel to reclaim the process's pages now (process_madvise MADV_PAGEOUT, Linux 5.10+)",
" F2 F flush: swapoff + swapon every device, emptying swap completely (root, needs enough free RAM)",
" F9 k send a signal (picker)",
" i swap in: fault every swapped page of the process back into RAM (reads /proc/PID/mem)",
" o swap out: ask the kernel to reclaim the process's pages now (process_madvise MADV_PAGEOUT, Linux 5.10+)",
" F flush: swapoff + swapon every device, emptying swap completely (root, needs enough free RAM)",
" k send a signal (picker)",
"",
"Keys",
" Up/Down PgUp/PgDn Home/End move Enter per-mapping breakdown of the selected process",
" F3 / search F6 s sort F5 t tree view z show/hide processes with no swap c full command line F10 q quit",
" / search s sort t tree view z show/hide processes with no swap c full command line h help q quit / back",
"",
"Settings (sort, tree, z, c, refresh) are saved to " + configPath() + " on exit.",
"Non-root: SWPPSS and actions only work for your own processes (kernel.yama.ptrace_scope).",
@@ -891,13 +873,13 @@ func (a *app) drawBottom(w, h int) {
a.put(0, y, "Search: "+a.filter+"_", stWarn)
return
}
keys := [][2]string{{"F1", "Help"}, {"F2", "Flush"}, {"F3", "Search"}, {"F5", "Tree"}, {"F6", "SortBy"}, {"F7", "SwapIn"}, {"F8", "SwapOut"}, {"F9", "Kill"}, {"F10", "Quit"}}
keys := [][2]string{{"h", "Help"}, {"/", "Search"}, {"s", "Sort"}, {"t", "Tree"}, {"z", "All"}, {"c", "Cmd"}, {"i", "SwapIn"}, {"o", "SwapOut"}, {"F", "Flush"}, {"k", "Kill"}, {"q", "Quit"}}
if a.view != viewList {
keys = [][2]string{{"Esc", "Back"}, {"F7", "SwapIn"}, {"F8", "SwapOut"}, {"F9", "Kill"}, {"F10", "Quit"}}
keys = [][2]string{{"q", "Back"}, {"i", "SwapIn"}, {"o", "SwapOut"}, {"k", "Kill"}}
}
x := 0
for _, k := range keys {
x = a.put(x, y, fmt.Sprintf("%3s", k[0]), stKey)
x = a.put(x, y, " "+k[0], stKey)
x = a.put(x, y, fmt.Sprintf("%-7s", k[1]), stFn)
}
}