fcaps: 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/fcaps - from package: ncl

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

On Debian possible default full paths are:

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

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

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