#!/bin/sh if grep Red /etc/issue > /dev/null 2>&1 then echo -n rh grep Red /etc/issue |cut -f5 -d' ' elif grep Fedora /etc/issue > /dev/null 2>&1 then echo -n fc grep Fedora /etc/issue |cut -f4 -d' ' elif grep CentOS /etc/issue > /dev/null 2>&1 then echo -n el grep CentOS /etc/issue |cut -f3 -d' ' |cut -f1 -d. else echo UNKNOWN fi