gaduhistory: 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/gaduhistory - from package: gaduhistory

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

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