Ink: 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/Ink - from package: gnustep-examples

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

On Debian possible default full paths are:

/usr/bin/Ink - from package: gnustep-examples
/usr/bin/Ink - from package: ink

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

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