ebview-client: 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 Debian possible default full paths are:

/usr/bin/ebview-client - from package: ebview

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

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