lslogins: 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/lslogins - from package: util-linux-ng

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

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