rpmverify: 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/rpmverify - from package: rpm

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

On Debian possible default full paths are:

/usr/bin/rpmverify - from package: rpm

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

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