pg_conftool: 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 Debian possible default full paths are:

/usr/bin/pg_conftool - from package: postgresql-common

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

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