Find and list all the unique vlaues of tag 76 on all of the messages.
sed -e '/\0x01/|/n' <filename>
Find and list all the unique vlaues of tag 76 only on 35=8 messages.
Search for a particular text or number 1251342 in which all files it is present.
Find and list only messages that has tag11=1352323523
Count how many messages are there in the log file.
wc -l <logfile>
Count how many hearbeat messages are there in the log file.
grep -c "35=0" <logfile>
Count how many application messages are there in the log file (i.e. checking the flow)
grep -v -E "35=A|35=1|35=2|35=5|35=0|35=3" <logfile> | wc -l
If any files contain messages other the fix messages then
grep "8=FIX" <logfile> | grep -v -E "35=A|35=1|35=2|35=5|35=0|35=3" | wc -l