calife: 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/calife - from package: calife

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