[root@localhost ~]# ifcfg -eth0
/sbin/ifcfg: line 25: [: too many arguments
/sbin/ifcfg: line 26: [: -ge: unary operator expected
/sbin/ifcfg: line 27: [: -ge: unary operator expected
/sbin/ifcfg: line 28: [: -ge: unary operator expected
SIOCGIFFLAGS: No such device
Error: cannot enable interface -eth0.
[root@localhost ~]#