slimit: 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/slimit - from package: python-slimit

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

On Debian possible default full paths are:

/usr/bin/slimit - from package: slimit

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

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