nc generally provides more verbosity with -v and other options. nc -v itself is pretty much telnet as far as TCP connections go (TELNET is itself another proto

nc generally provides more verbosity with -v and other options. nc -v itself is pretty much telnet as far as TCP connections go (TELNET is itself another protocol on top of TCP). In fact on macOS, I alias telnet=’nc -v’. Anyway my intent wasn’t to directly challenge your method, this is just a more shell-independent and universal method of doing the same.