wslecn: command not found

Have You tried accessing the binary with the full path?

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/wslecn - from package: wsl

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

On Debian possible default full paths are:

/usr/bin/wslecn - from package: wsl

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