ssss-combine: 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 CentOS possible default full paths are:

/usr/bin/ssss-combine - from package: ssss

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/ssss-combine - from package: ssss

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

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