stterm: 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

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/stterm - from package: stterm

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