obfit: 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 CentOS possible default full paths are:

/usr/bin/obfit - from package: openbabel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/obfit - from package: openbabel

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

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