macOS app frontmost

lsappinfo.sh

#!/usr/bin/env bash
{ set +x; } 2>/dev/null

lsappinfo info -only name `lsappinfo front` | awk -F'"' '{print $4}'
lsappinfo info -only pid `lsappinfo front` | awk -F'"=' '{print $2}'
lsappinfo info -only bundlepath `lsappinfo front` | awk -F'"' '{print $4}'
lsappinfo info -only bundleID `lsappinfo front` | awk -F'"' '{print $4}'

osascript.sh

#!/usr/bin/env bash
{ set +x; } 2>/dev/null

osascript <<EOF
tell application "System Events"
    name of (first process whose frontmost is true)
end tell
EOF

lsappinfo info `lsappinfo front` has stopped working for me after updating to Sonoma. Does it work for you?

@NightMachinery I discovered a fix: https://stackoverflow.com/questions/24515436/how-to-get-current-foreground-applications-name-or-pid-in-os-x#comment138153740_24562352

In short, do lsappinfo info `lsappinfo front | sed 's/-/-0x/'` instead.