grep -n "^[ ]\+" /home/neo/Público/nfdos/src/Makefile.am
grep -n "^[ ]\+" /home/neo/Público/nfdos/configure.ac
file Makefile.am
file src/Makefile.am
file configure.ac
cat -A Makefile.am | grep '\^I'
cat -A src/Makefile.am | grep '\^I'
cat -A configure.ac | grep '\^I'
nl -ba Makefile | sed -n '770,790p'
grep -n "^[ ]" Makefile | head 

hmmm 😏:
```
git rm -r --cached ./src/_nfdos/e2fsprogs
fatal: pathspec 'e2fsprogs/' não encontrou nenhum arquivo
```