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Try:
grep '^..AB...Y' file

Depends on how your config file is!!!

Pls post sample input (both config and folder) and expected output.

Regards
Ravi

If the server is at a known, fixed IP address, you can assign it two names in /etc/hosts like this. Then either name will connect you to the same server. 192.168.1.21 serverA serverB
Then make a...

One way could be something like this:
file="lastline.txt"

lastchar=$(od -An -t dC $file |awk 'NF{c=$NF}END{print c}')
if [ $lastchar = "10" ]
then
echo "file is OK"
else
echo >> $file
fi

Have a read of this post:

https://www.unix.com/shell-programming-scripting/57511-sed-skipping-last-line-file.html#5

This is Useless Use of Cat (http://partmaps.org/era/unix/award.html):
cat...

should be good enough with
sed 's/SCORE=.*/SCORE=/'

$ means "must match until the end of the line". .* means "match zero or more of any character". a* would mean "match 1 or more a's".

So 's/SCORE=.*$/SCORE=\r/g means match SCORE (at any point in...

You're welcome. You might want to read it too.



cat $file | sed 's/SCORE=.*$/SCORE=\r/g' > newfile

cat $file | sed 's/SCORE=.*$/SCORE=/' > newfile That's also a useless use of cat...