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

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

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