odbcinst: 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/odbcinst - from package: unixODBC

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

On Debian possible default full paths are:

/usr/bin/odbcinst - from package: odbcinst

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

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