dvtm-status: 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 CentOS possible default full paths are:

/usr/bin/dvtm-status - from package: dvtm

You may install the required package with command yum install {package}

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