iodbctest: 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/iodbctest - from package: libiodbc

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

On Debian possible default full paths are:

/usr/bin/iodbctest - from package: iodbc

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

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