repomdxml2solv: 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/repomdxml2solv - from package: libsolv-tools

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

On Debian possible default full paths are:

/usr/bin/repomdxml2solv - from package: libsolv-tools

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

Error in other languages:
repomdxml2solv: bevel nie gevind nie
repomdxml2solv: comandă negăsită
repomdxml2solv: comando não encontrado
repomdxml2solv: commande introuvable
repomdxml2solv: command not found
repomdxml2solv: käsku ei ole
repomdxml2solv: không tìm thấy lệnh
repomdxml2solv: komanda nerasta
repomdxml2solv: Kommando nicht gefunden.
repomdxml2solv: kommandot finns inte
repomdxml2solv: komut yok
repomdxml2solv: nie znaleziono polecenia
repomdxml2solv: níor aimsíodh an t-ordú
repomdxml2solv: no se encontró la orden
repomdxml2solv: no s'ha trobat l'ordre
repomdxml2solv: opdracht niet gevonden
repomdxml2solv: parancs nem található
repomdxml2solv: perintah tidak ditemukan
repomdxml2solv: príkaz nenájdený
repomdxml2solv: příkaz nenalezen
repomdxml2solv: команда не найдена
repomdxml2solv: командата не е открита
repomdxml2solv: 命令找不到
repomdxml2solv: コマンドが見つかりません