turba-public-to-horde-share: 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/turba-public-to-horde-share - from package: php-horde-turba

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

On Debian possible default full paths are:

/usr/bin/turba-public-to-horde-share - from package: php-horde-turba

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

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