hmm-info: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/hmm-info - from package: snap

You may install the required package with command apt-get install {package}

Error in other languages:
hmm-info: bevel nie gevind nie
hmm-info: comandă negăsită
hmm-info: comando não encontrado
hmm-info: commande introuvable
hmm-info: command not found
hmm-info: käsku ei ole
hmm-info: không tìm thấy lệnh
hmm-info: komanda nerasta
hmm-info: Kommando nicht gefunden.
hmm-info: kommandot finns inte
hmm-info: komut yok
hmm-info: nie znaleziono polecenia
hmm-info: níor aimsíodh an t-ordú
hmm-info: no se encontró la orden
hmm-info: no s'ha trobat l'ordre
hmm-info: opdracht niet gevonden
hmm-info: parancs nem található
hmm-info: perintah tidak ditemukan
hmm-info: príkaz nenájdený
hmm-info: příkaz nenalezen
hmm-info: команда не найдена
hmm-info: командата не е открита
hmm-info: 命令找不到
hmm-info: コマンドが見つかりません