maitreya_textclient: 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/maitreya_textclient - from package: maitreya

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

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