Category: Updates

What is $NF in awk?

NF is a predefined variable whose value is the number of fields in the current record. awk automatically updates the value of NF each time it reads a reco...

Are VPNs really private?

A VPN works by encrypting your online presence. The only way to decipher this encryption is with a key. Only your computer and the VPN know this key, maki...