dglc: 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/dglc - from package: dgc

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

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