saslfinger: 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/saslfinger - from package: sasl2-bin

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

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