In awk, casting a variable as a boolean condition is the same as testing if

the length of the variable contents is greater than zero

This allows us to also move the secondary condition into the action clause

diff --git a/usr.sbin/bsdinstall/scripts/wlanconfig b/usr.sbin/bsdinstall/scripts/wlanconfig
index 2239388bcbf8214bbc08ad45fe44713477ef55c6..cde3c901bca741bb464cc2e9dcf45d0fce58df2e 100755 (executable)
--- a/usr.sbin/bsdinstall/scripts/wlanconfig
+++ b/usr.sbin/bsdinstall/scripts/wlanconfig
@@ -213,10 +213,7 @@ while :; do
 
        SCAN_RESULTS=$( wpa_cli scan_results )
        NETWORKS=$( echo "$SCAN_RESULTS" | awk -F '\t' '
-               /..:..:..:..:..:../ {
-                       if (length($5) > 0)
-                               printf("\"%s\"\t%s\n", $5, $4)
-               }
+               /..:..:..:..:..:../ && $5 { printf("\"%s\"\t%s\n", $5, $4) }
        ' | sort | uniq )
 
        if [ ! "$NETWORKS" ]; then