rsvg: command not found

Have You tried accessing the binary with the full path?

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/rsvg - from package: librsvg2

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

On Debian possible default full paths are:

/usr/bin/rsvg - from package: librsvg2-bin

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