generic_count: 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/generic_count - from package: sloccount

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

On Debian possible default full paths are:

/usr/bin/generic_count - from package: sloccount

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

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