debci-list-packages: 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/share/debci/bin/debci-list-packages - from package: debci

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

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