wpg2svg: 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/wpg2svg - from package: libwpg-tools

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

On Debian possible default full paths are:

/usr/bin/wpg2svg - from package: libwpg-tools

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

Error in other languages:
wpg2svg: bevel nie gevind nie
wpg2svg: comandă negăsită
wpg2svg: comando não encontrado
wpg2svg: commande introuvable
wpg2svg: command not found
wpg2svg: käsku ei ole
wpg2svg: không tìm thấy lệnh
wpg2svg: komanda nerasta
wpg2svg: Kommando nicht gefunden.
wpg2svg: kommandot finns inte
wpg2svg: komut yok
wpg2svg: nie znaleziono polecenia
wpg2svg: níor aimsíodh an t-ordú
wpg2svg: no se encontró la orden
wpg2svg: no s'ha trobat l'ordre
wpg2svg: opdracht niet gevonden
wpg2svg: parancs nem található
wpg2svg: perintah tidak ditemukan
wpg2svg: príkaz nenájdený
wpg2svg: příkaz nenalezen
wpg2svg: команда не найдена
wpg2svg: командата не е открита
wpg2svg: 命令找不到
wpg2svg: コマンドが見つかりません