Getting a single digit integer for RHEL version using SED or AWK

Question

I can get the 5.8 or 6.4 number from looking at /etc/redhat-release, but I don't know how to get it converted from 5.8 to just 5. The command I'm using so far is:

cat /etc/redhat-release | awk {'print $7'}

Which produces the 5.8. How would I go about getting the single digit integer from that using bash?

Answer 1

Or use int() function:

cat /etc/redhat-release | awk '{print int($7)}'


$ cat /etc/redhat-release | awk {'print $7'}
5.8
$ cat /etc/redhat-release | awk '{print int($7)}'
5