schemaIDGUID: 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/schemaIDGUID - from package: openchange-client

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

On Debian possible default full paths are:

/usr/bin/schemaIDGUID - from package: openchangeclient

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

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