Applescript: Running terminal commands and Saving output - variables

Question

So, I'm trying to write a script to remove wireless networks and their associated keychain credentials.
tell application "Terminal"
activate
string mywifi
set mywifi to "test"
set mywifi to do script ("networksetup -listallhardwareports | grep -A 1 'Wi-Fi' | grep -v 'Hardware' | sed -e 's/'Device:\ '//g'")
do script "networksetup -removepreferredwirelessnetwork $mywifi NETWORK1"
do script "security delete-generic-password NETWORK1"
delay 2
#do script "networksetup -removepreferredwirelessnetwork $mywifi NETWORK2"
#do script "security delete-generic-password Network2"
delay2
#do script "networksetup -removepreferredwirelessnetwork $mywifi Network3"
#do script "security delete-generic-password Network3"
delay 2
#do script "networksetup -removepreferredwirelessnetwork $mywifi Network4"
#do script "security delete-generic-password Network4"
delay 2
#do script "networksetup -removepreferredwirelessnetwork $mywifi Network5"
#do script "security delete-generic-password Network5"
delay 2
end tell
quit
Where i'm running into trouble is setting that variable with the output of that command. The command runs in terminal, though whenever I attempt to compile it, the following error is thrown
Syntax Error: Expected """ but found unknown token
It finds this right after /device:\ ' between the \ '
I have not been able to figure out what is missing. If i add " between them it just drops the terminal to >
Straight up my first foray into applescript but not my first language. I think i've been staring at it too long.

Answer 1

This is not intended to be a complete answer, because I'm not too familiar with the security command, although I beleive you'll need to preface it with the sudo command to modify the keychain. There's lots of good info on the Internet covering security command. I read quite a bit but there's nothing in my keychain I want to remove so I'm not able to test in this respect.
The following covers the networksetup command, which you may also need to use sudo, in Terminal, but in AppleScript add with administrator privileges at the end of the do shell script command", if necessary when preferred wireless networks.
It looks like your trying to remove all preferred wireless networks and this can be done directly in Terminal with the following command:
networksetup -removeallpreferredwirelessnetworks $(networksetup -listallhardwareports | awk '/Wi-Fi/{getline; print $2}')
If you want to do the same thing in AppleScript, e.g:
do shell script "networksetup -removeallpreferredwirelessnetworks $(networksetup -listallhardwareports | awk '/Wi-Fi/{getline; print $2}')"
If you want to use it in a bash script, then use the line above with a bash shebang, e.g.:
#!/bin/bash
networksetup -removeallpreferredwirelessnetworks $(networksetup -listallhardwareports | awk '/Wi-Fi/{getline; print $2}')
Save it in a plain text file without an extension, and make it executable, e.g. chmod u+x filename where filename is whatever you saved it as. Then to use it in Terminal, ./filename or /path/to/filename, if it's not saved in a location defined within the PATH environment variable.
If your looking to do it just for specific networks, then instead of a line for each network, you can loop through a list. If you need help with that, let us know.