buici-clock: 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

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/buici-clock - from package: buici-clock

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