csv2rdf: 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 Debian possible default full paths are:

/usr/bin/csv2rdf - from package: python-rdflib-tools

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

Error in other languages:
csv2rdf: bevel nie gevind nie
csv2rdf: comandă negăsită
csv2rdf: comando não encontrado
csv2rdf: commande introuvable
csv2rdf: command not found
csv2rdf: käsku ei ole
csv2rdf: không tìm thấy lệnh
csv2rdf: komanda nerasta
csv2rdf: Kommando nicht gefunden.
csv2rdf: kommandot finns inte
csv2rdf: komut yok
csv2rdf: nie znaleziono polecenia
csv2rdf: níor aimsíodh an t-ordú
csv2rdf: no se encontró la orden
csv2rdf: no s'ha trobat l'ordre
csv2rdf: opdracht niet gevonden
csv2rdf: parancs nem található
csv2rdf: perintah tidak ditemukan
csv2rdf: príkaz nenájdený
csv2rdf: příkaz nenalezen
csv2rdf: команда не найдена
csv2rdf: командата не е открита
csv2rdf: 命令找不到
csv2rdf: コマンドが見つかりません