Here is a script that I use, mainly composed with the Toybox version of awk, that will extract all of the WiFi passwords stored on an Android device.

This is enormously portable, and does not require any new software installations for Android users who have root.

Requiring xsv would reduce availability to a fraction of where it can be run now.

  #!/bin/sh

  find /data \
      -name WifiConfigStore.xml \
      -print0 |
  xargs -0 awk '

    /"SSID/ { s = 1 }
    /PreShared/ { p = 1 }

    s || p {
      gsub(/[<][^>]+[>]/, "")
      sub(/^[&]quot;/, "")
      sub(/[&]quot;$/, "")
      gsub(/[&]quot;/, "\"")
      gsub(/[&]amp;/, "\\&")
      gsub(/[&]lt;/, "<")
      gsub(/[&]gt;/, ">")
    }

    s { s = 0; printf "%-32.32s ", $0 }
    p { p = 0; print }

  ' | sort -f

Note that the -print0 null processing is not POSIX. This is a reasonable compromise of standards compliance, as it does not reduce the base of available users.

I did try to do this first with arrarys, but awk segfaulted.