pslist: 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 Debian possible default full paths are:

/usr/bin/pslist - from package: pslist

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

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