General :: AWK Error In Slack 13

I install Slackware on Virtual Box with 02 Nic (Eth0: wan, eth1 :local), config iptable , bind for a small network, it works fine local PC can go internet and use DNS cache.

I try slack update and get the following error:

slackpkg update

awk package not found! Please install awk before you run slackpkg, as slackpkg cannot function without awk.

I try which awk

which awk
which: no awk in (/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin:/bin:/usr/games)