sp2char: 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/sp2char - from package: wcstools

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

Error in other languages:
sp2char: bevel nie gevind nie
sp2char: comandă negăsită
sp2char: comando não encontrado
sp2char: commande introuvable
sp2char: command not found
sp2char: käsku ei ole
sp2char: không tìm thấy lệnh
sp2char: komanda nerasta
sp2char: Kommando nicht gefunden.
sp2char: kommandot finns inte
sp2char: komut yok
sp2char: nie znaleziono polecenia
sp2char: níor aimsíodh an t-ordú
sp2char: no se encontró la orden
sp2char: no s'ha trobat l'ordre
sp2char: opdracht niet gevonden
sp2char: parancs nem található
sp2char: perintah tidak ditemukan
sp2char: príkaz nenájdený
sp2char: příkaz nenalezen
sp2char: команда не найдена
sp2char: командата не е открита
sp2char: 命令找不到
sp2char: コマンドが見つかりません