datastore-service: 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/datastore-service - from package: sugar-datastore

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

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