cqa-importbugnumbers: 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/cqa-importbugnumbers - from package: collab-qa-tools

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