dumpsolv: 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/dumpsolv - from package: libsolv-tools

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

On Debian possible default full paths are:

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

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

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