xview: 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/xview - from package: xloadimage

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

On Debian possible default full paths are:

/usr/bin/xview - from package: xloadimage

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

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