sscm: 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/sscm - from package: sigscheme

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

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