my $inc = "13 drwxr-xr-x   4 root     root       34816 Mar 18 08:17 FILE_INPUT_Wrt004)";
if ($inc =~/FILE_INPUT/){
print"Inc is $inc";
}


Output I got:

Inc is 13 drwxr-xr-x   4 root     root       34816 Mar 18 08:17 FILE_INPUT_Wat004


Expected output:
FILE_INPUT_Wrt004