wtoc: 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/wtoc - from package: Canna

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

On Debian possible default full paths are:

/usr/bin/wtoc - from package: Canna

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

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