ntfstruncate: 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:

/bin/ntfstruncate - from package: ntfsprogs
/usr/bin/ntfstruncate - from package: ntfsprogs

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

On Debian possible default full paths are:

/bin/ntfstruncate - from package: ntfs-3g

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

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