i13942ts: 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/i13942ts - from package: opencaster

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

Error in other languages:
i13942ts: bevel nie gevind nie
i13942ts: comandă negăsită
i13942ts: comando não encontrado
i13942ts: commande introuvable
i13942ts: command not found
i13942ts: käsku ei ole
i13942ts: không tìm thấy lệnh
i13942ts: komanda nerasta
i13942ts: Kommando nicht gefunden.
i13942ts: kommandot finns inte
i13942ts: komut yok
i13942ts: nie znaleziono polecenia
i13942ts: níor aimsíodh an t-ordú
i13942ts: no se encontró la orden
i13942ts: no s'ha trobat l'ordre
i13942ts: opdracht niet gevonden
i13942ts: parancs nem található
i13942ts: perintah tidak ditemukan
i13942ts: príkaz nenájdený
i13942ts: příkaz nenalezen
i13942ts: команда не найдена
i13942ts: командата не е открита
i13942ts: 命令找不到
i13942ts: コマンドが見つかりません