cshtml: 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/cshtml - from package: csdiff

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

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