gcov2perl: 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/gcov2perl - from package: perl-Devel-Cover

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

On Debian possible default full paths are:

/usr/bin/gcov2perl - from package: libdevel-cover-perl

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

Error in other languages:
gcov2perl: bevel nie gevind nie
gcov2perl: comandă negăsită
gcov2perl: comando não encontrado
gcov2perl: commande introuvable
gcov2perl: command not found
gcov2perl: käsku ei ole
gcov2perl: không tìm thấy lệnh
gcov2perl: komanda nerasta
gcov2perl: Kommando nicht gefunden.
gcov2perl: kommandot finns inte
gcov2perl: komut yok
gcov2perl: nie znaleziono polecenia
gcov2perl: níor aimsíodh an t-ordú
gcov2perl: no se encontró la orden
gcov2perl: no s'ha trobat l'ordre
gcov2perl: opdracht niet gevonden
gcov2perl: parancs nem található
gcov2perl: perintah tidak ditemukan
gcov2perl: príkaz nenájdený
gcov2perl: příkaz nenalezen
gcov2perl: команда не найдена
gcov2perl: командата не е открита
gcov2perl: 命令找不到
gcov2perl: コマンドが見つかりません