ajaxterm: 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/ajaxterm - from package: ajaxterm

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

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