How to recover accidentally removed /bin/ls binary
I have mistakenly deleted the ls executable from the /bin folder.
Can I recover it or install it through the terminal?
You could check which package brings ls binary using dpkg:
$ dpkg -S /bin/ls
coreutils: /bin/ls
dpkg will show you that it is package coreutils. Now you only need to reinstall it:
$ sudo apt-get install --reinstall coreutils