Field swapping example

Author: klashxx

field_swap.awk

@@ -0,0 +1,18 @@
+# Last field should become first and first become last.
+# Example: awk -f field_swap.awk files/passwd
+#
+# We are playing with an intermediate variable used to store the first field value
+
+BEGIN{
+    FS=":"
+    OFS=FS
+    }
+{
+    last=$1
+    $1=$NF
+    $NF=last
+}
+{
+    print 
+}
+