dvicopy: 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/dvicopy - from package: texlive-dviutils

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

On Debian possible default full paths are:

/usr/bin/dvicopy - from package: texlive-binaries

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

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