smlistsh: 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/smlistsh - from package: ion

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

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