in.fingerd: 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/sbin/in.fingerd - from package: finger-server

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

On Debian possible default full paths are:

/usr/sbin/in.fingerd - from package: fingerd

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

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