awk: command not found

Have You tried accessing the binary with the full path?

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/awk - from package: gawk
/usr/bin/awk - from package: gawk

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

On Debian possible default full paths are:

/usr/lib/plan9/bin/awk - from package: 9base

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