pico.alpine: 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/pico.alpine - from package: alpine-pico

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

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