wserv: 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 Debian possible default full paths are:

/usr/sbin/wserv - from package: ircii
/usr/lib/scrollz/bin/wserv - from package: scrollz

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