vet: 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/vet - from package: golang-vet

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

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