Saboteur

SystemName=$(grep -oP "SystemName: \K[A-Za-z0-9]*" server_out.db)
if [ "$SystemName" == " S4BZJ045 ]; then
  echo "Ok"
else
  echo "Not Ok"
fi

awk -F "[:# ]" '{print $1" "$2":"$3" "$5" "$7}' file.log

MYVAR=$(echo -e "hello world\nqqq\naaa")
echo "$MYVAR" | sed ...
echo "$MYVAR" | grep ...

cat test.txt | while read; do eval 'for word in '$REPLY'; do echo -n "$word"|tr " " "_"; echo -n " "; done' | cut -d " " --output-delimiter=":" -f 1,3,4,6;done

cat ашду | perl -ne '/^(\d+)(.+)/; print "".($1/2)."$2\n"'

cp ip.txt ip.txt.bak; sed -e 's/\/48$//g' ip.txt.bak | head -n -2 > ip.txt

awk '{print $1}' data.log | sort -t' ' -k3 -rn | uniq | wc -l