gzip: 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:

/bin/gzip - from package: gzip
/usr/bin/gzip - from package: gzip

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

On Debian possible default full paths are:

/bin/gzip - from package: gzip
/usr/lib/klibc/bin/gzip - from package: klibc-utils

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

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