Vladimir jurinva

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

	# Open in IE: https://boxstarter.org/package/url?https://gist.github.com/dangmai/f3c30a601099bb0e6ee0dc24b2713180/raw/boxstarter.ps1

	# Prompt for inputs
	$pcName = Read-Host 'Specify PC Name'
	$jumpcloudconnectKey = Read-Host 'Specify JumpCloud Connect Key'

	#---- TEMPORARY ---
	Disable-UAC

	#--- Windows Settings ---

	# Source: https://serverfault.com/questions/361421/dump-nginx-config-from-running-process
	# Set pid of nginx master process here
	pid=8192

	# generate gdb commands from the process's memory mappings using awk
	cat /proc/$pid/maps \| awk '$6 !~ "^/" {split ($1,addrs,"-"); print "dump memory mem_" addrs[1] " 0x" addrs[1] " 0x" addrs[2] ;}END{print "quit"}' > gdb-commands

	# use gdb with the -x option to dump these memory regions to mem_* files
	gdb -p $pid -x gdb-commands

	echo 0 > /sys/class/vtconsole/vtcon1/bind
	rmmod nouveau