xlsview: 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/xlsview - from package: catdoc

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

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