tcxpm2rgb: 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/tcxpm2rgb - from package: transcode

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

Error in other languages:
tcxpm2rgb: bevel nie gevind nie
tcxpm2rgb: comandă negăsită
tcxpm2rgb: comando não encontrado
tcxpm2rgb: commande introuvable
tcxpm2rgb: command not found
tcxpm2rgb: käsku ei ole
tcxpm2rgb: không tìm thấy lệnh
tcxpm2rgb: komanda nerasta
tcxpm2rgb: Kommando nicht gefunden.
tcxpm2rgb: kommandot finns inte
tcxpm2rgb: komut yok
tcxpm2rgb: nie znaleziono polecenia
tcxpm2rgb: níor aimsíodh an t-ordú
tcxpm2rgb: no se encontró la orden
tcxpm2rgb: no s'ha trobat l'ordre
tcxpm2rgb: opdracht niet gevonden
tcxpm2rgb: parancs nem található
tcxpm2rgb: perintah tidak ditemukan
tcxpm2rgb: príkaz nenájdený
tcxpm2rgb: příkaz nenalezen
tcxpm2rgb: команда не найдена
tcxpm2rgb: командата не е открита
tcxpm2rgb: 命令找不到
tcxpm2rgb: コマンドが見つかりません