update-boinc-applinks: 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/update-boinc-applinks - from package: boinc-client

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

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