perlver: 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/perlver - from package: perl-Perl-MinimumVersion

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

On Debian possible default full paths are:

/usr/bin/perlver - from package: libperl-minimumversion-perl

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

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