gperf: 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/gperf - from package: gperf

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

On Debian possible default full paths are:

/usr/bin/gperf - from package: gperf

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

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