ircp-tray: 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/ircp-tray - from package: ircp-tray

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

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