Change data to lower captical in awk.

*** Original data in upper capital

[tatshuya]# cat user-lmi3.txt |awk '{print $1}'
SYS
SYSTEM
DBSNMP
TATSHUYA

*** When you want to change data in lower capital.

[tatshuya]# cat user-lmi3.txt |awk '{print tolower($1) }'
sys
system
dbsnmp
tatshuya


-- TaTsHuYa --