caret_app_wrapper: 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/lib/caret/bin/caret_app_wrapper - from package: caret

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

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