arcecho: 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/arcecho - from package: nordugrid-arc-client

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

On Debian possible default full paths are:

/usr/bin/arcecho - from package: nordugrid-arc-client

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

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