checkpath: 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:

/lib/rc/bin/checkpath - from package: openrc

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

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