git-history-coverage: 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 Debian possible default full paths are:

/usr/bin/git-history-coverage - from package: ggcov

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

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