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 CentOS possible default full paths are:

/usr/bin/alpine - from package: alpine

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

On Debian possible default full paths are:

/usr/bin/alpine - from package: alpine

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

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