أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
above command won't tell which file(s) has the word Techmint, i think more appropriate is to use grep -n Techmint *.txt
grep -i "Tecmint" *
This will show the files if it is contained any of the file
$ grep -i "Techmint" *.txt, would to that for both the cases, with content and files.
$ grep -l Techmint *.txt , would list the files containing the string.