s3put: 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/s3put - from package: python2-boto
/usr/bin/s3put - from package: python-boto

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

On Debian possible default full paths are:

/usr/bin/s3put - from package: libnet-amazon-s3-tools-perl

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

Error in other languages:
s3put: bevel nie gevind nie
s3put: comandă negăsită
s3put: comando não encontrado
s3put: commande introuvable
s3put: command not found
s3put: käsku ei ole
s3put: không tìm thấy lệnh
s3put: komanda nerasta
s3put: Kommando nicht gefunden.
s3put: kommandot finns inte
s3put: komut yok
s3put: nie znaleziono polecenia
s3put: níor aimsíodh an t-ordú
s3put: no se encontró la orden
s3put: no s'ha trobat l'ordre
s3put: opdracht niet gevonden
s3put: parancs nem található
s3put: perintah tidak ditemukan
s3put: príkaz nenájdený
s3put: příkaz nenalezen
s3put: команда не найдена
s3put: командата не е открита
s3put: 命令找不到
s3put: コマンドが見つかりません