cdfsigtrp: 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/cdfsigtrp - from package: cdftools

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