ictrans: 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/ictrans - from package: ncl

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

On Debian possible default full paths are:

/usr/bin/ictrans - from package: ncl-ncarg

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

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