fingerw: 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/bin/fingerw - from package: libwww-finger-perl

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