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

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

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