eiskaltdcpp-daemon: 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/eiskaltdcpp-daemon - from package: eiskaltdcpp-daemon

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

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