vcoverage: 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/vcoverage - from package: perl-SystemPerl

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

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