finding no of blank lines in file using awk in shell

This program prints the no of blank lines in a file using awk in shell

acer@ubuntu:~$
acer@ubuntu:~$
acer@ubuntu:~$ cat > ddd

dsdsd

sdsdsd


dsds
acer@ubuntu:~$ awk 'BEGIN { x=0 }
> /$^/{ x=x+1 } # for counting the no of blank lines
> END { print " no of blank lines in the file  " x }' ddd
 no of blank lines in the file  4
acer@ubuntu:~$



For detailed understanding of BEGIN,END you can see the AWK PROGRAMMING MODEL blog in this site.

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