Another update from ingydotnet^djgoku

Task/Rot-13/UNIX-Shell/rot-13-1.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+rot13() {
+   tr a-zA-Z n-za-mN-ZA-M
+}
+
+cat "$@" | rot13

Task/Rot-13/UNIX-Shell/rot-13-2.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
-function rot13 () {
+rot13() {
    tr '[a-m][n-z][A-M][N-Z]' '[n-z][a-m][N-Z][A-M]'
-   }
+}
 
 cat ${1+"$@"} | rot13