csclng: 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/csclng - from package: csclng

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