ocaml-gettext: 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/ocaml-gettext - from package: ocaml-gettext-devel

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

On Debian possible default full paths are:

/usr/bin/ocaml-gettext - from package: libgettext-ocaml-dev

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

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