csp_install: 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
/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/csp_install - from package: caspar

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