gitview: 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/gitview - from package: gnuit

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