project: 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/project - from package: GMT

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

On Debian possible default full paths are:

/usr/bin/project - from package: turnin-ng
/usr/lib/gmt/bin/project - from package: GMT

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

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