permview: 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 CentOS possible default full paths are:

/usr/bin/permview - from package: mono-devel

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

On Debian possible default full paths are:

/usr/bin/permview - from package: mono-devel

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

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