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thank to your help I could solve my problem

I still have a problem with my script.
I have the following file tt

m.cc
mA.c.*.l
mm.
mmmmAZETY
moreAs
mriouzoepi.dfgr

and I would like that only
m.cc
mm.
mriouzoepi.dfgr

are...

I try to write a small script that looks in the file tt for all the words that start with m in lowercase and in which there is no uppercase.

#!/bin/sh
grep ^m\.*\.[^A-Z]\.* tt

I have to create un counter and I am unable to do an additition:

#!/bin/sh
count=$1
while [[ $count -le 10]]
do
echo $count
$count=$count+$1
done