teachjove: command not found

Have You tried accessing the binary with the full path?

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/teachjove - from package: jove

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

On Debian possible default full paths are:

/usr/bin/teachjove - from package: jove

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