Travis Cline — TIL https://tmc.dev/til/ Today I Learned — short notes on things I figure out day to day Diagnosing a wedged Chrome DevTools socket with a raw WebSocket probe https://tmc.dev/til/chrome/wedged-cdp-raw-websocket-probe.html https://tmc.dev/til/chrome/wedged-cdp-raw-websocket-probe.html Thu, 16 Jul 2026 00:00:00 +0000 A raw WebSocket probe separates a wedged browser from a broken CDP client when every command times out. grep -c exits non-zero on zero matches https://tmc.dev/til/shell/grep-c-exit-status.html https://tmc.dev/til/shell/grep-c-exit-status.html Thu, 16 Jul 2026 00:00:00 +0000 grep -c prints 0 and exits 1 when nothing matches, so a || fallback silently corrupts the count.