camlidl: 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/camlidl - from package: ocaml-camlidl

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

On Debian possible default full paths are:

/usr/bin/camlidl - from package: camlidl

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

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