awk ref

Yep/Extensions/UIImage+Yep.swift

@@ -21,6 +21,7 @@ extension UIImage {
 
 // nix love awk, in Images.xcassets
 // $ ls -l | awk '{print $9}' | awk -F"." '{print $1}' | awk -F"_" '{out=$0" ";for(i=1;i<=NF;i++){if(i==1){out=out""tolower($i)}else{out=out""toupper(substr($i,1,1))substr($i,2)}};print out}' | awk '{print "static var yep_"$2": UIImage {\n\treturn UIImage(named: \""$1"\")!\n}\n"}' > ~/Downloads/images.swift
+// ref https://github.com/nixzhu/dev-blog/blob/master/2016-08-11-awk.md
 
 extension UIImage {