Escape powershell characters inside cmd - powershell

Question

I would like to execute a ping sweep, which is this powershell command:
$NET="192.168.111";for($i=1;$i -lt 255;$i++){$command="ping -n 1 -w 100 $NET.$i > nul 2>&1 && echo $NET.$i";start-process -nonewwindow "cmd" -argumentlist "/c $command" -redirectstandardoutput "tmp$i.txt"};cat tmp*.txt > sweep.txt
I need to do this inside cmd, I have already tried:
Wihout Quotes
powershell -c $NET="192.168.111";for($i=1;$i -lt 255;$i++){$command="ping -n 1 -w 100 $NET.$i > nul 2>&1 && echo $NET.$i";start-process -nonewwindow "cmd" -argumentlist "/c $command" -redirectstandardoutput "tmp$i.txt"};cat tmp*.txt > sweep.txt
With 1 doble quote
powershell -c "$NET="192.168.111";for($i=1;$i -lt 255;$i++){$command="ping -n 1 -w 100 $NET.$i > nul 2>&1 && echo $NET.$i";start-process -nonewwindow "cmd" -argumentlist "/c $command" -redirectstandardoutput "tmp$i.txt"};cat tmp*.txt > sweep.txt"
With 3 double quoutes
powershell -c """$NET="192.168.111";for($i=1;$i -lt 255;$i++){$command="ping -n 1 -w 100 $NET.$i > nul 2>&1 && echo $NET.$i";start-process -nonewwindow "cmd" -argumentlist "/c $command" -redirectstandardoutput "tmp$i.txt"};cat tmp*.txt > sweep.txt"""
Escaping the &&
powershell -c "$NET="192.168.111";for($i=1;$i -lt 255;$i++){$command="ping -n 1 -w 100 $NET.$i > nul 2>&1 \&\& echo $NET.$i";start-process -nonewwindow "cmd" -argumentlist "/c $command" -redirectstandardoutput "tmp$i.txt"};cat tmp*.txt > sweep.txt"
No success yet.
Thanks!

Answer 1

This worked for me, I used backticks before the quotes to escape. Even tho this could be accomplished with native Powershell commands but since you asked for something specific, here it is.
$NET="192.168.111"
for($i=1;$i -lt 255;$i++)
{
$command="echo ########### && echo Pinging $NET.$i && ping -n 1 -w 100 $NET.$i 2>&1"
start-process "cmd" -argumentlist "/c `"$command`"" -NoNewWindow -RedirectStandardOutput "tmp$i.txt"
}
while($true)
{
if(-not (Get-Process cmd -EA SilentlyContinue))
{
cat tmp*.txt > sweep.txt
break
}
sleep 5
}
Note that the while loop will wait for all cmd.exe processes to stop before breaking and unifying those files into sweep.txt. Remember to close any instance of cmd.exe you have opened before running this script or this loop will continue forever :D