arccp: 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/arccp - 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/arccp - from package: nordugrid-arc-client
/usr/lib/debug/usr/bin/arccp - from package: nordugrid-arc-dbg

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