s2cixl: command not found

Have You tried accessing the binary with the full path?

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/s2cixl - from package: scheme2c

You may install the required package with command apt-get install {package}
Error in other languages:
s2cixl: bevel nie gevind nie
s2cixl: comandă negăsită
s2cixl: comando não encontrado
s2cixl: commande introuvable
s2cixl: command not found
s2cixl: käsku ei ole
s2cixl: không tìm thấy lệnh
s2cixl: komanda nerasta
s2cixl: Kommando nicht gefunden.
s2cixl: kommandot finns inte
s2cixl: komut yok
s2cixl: nie znaleziono polecenia
s2cixl: níor aimsíodh an t-ordú
s2cixl: no se encontró la orden
s2cixl: no s'ha trobat l'ordre
s2cixl: opdracht niet gevonden
s2cixl: parancs nem található
s2cixl: perintah tidak ditemukan
s2cixl: príkaz nenájdený
s2cixl: příkaz nenalezen
s2cixl: команда не найдена
s2cixl: командата не е открита
s2cixl: 命令找不到
s2cixl: コマンドが見つかりません