stcpcli: 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/stcpcli - from package: ion

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

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