ideviceinfo: 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/ideviceinfo - from package: libimobiledevice

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

On Debian possible default full paths are:

/usr/bin/ideviceinfo - from package: libimobiledevice-utils

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

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