cdfsigintegr: 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/cdfsigintegr - from package: cdftools

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

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