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linux

Timing Request with cURL

We can use cURL to measure request time consumed during the whole process, such as DNS lookup, TCP handshake, SSL handshake time: curl https://www.aldoraweb.com/ \ -s --connect-timeout 5 \ -o /dev/null \ -w "%{time_namelookup} %{time_connect} %{time_appconnect} %{time_pretransfer} %{time_starttransfer} %{time_total}" | awk '{print "DNS

Execute sudo without a Password

If you use terminal often, then you must face an annoying problem: you need to enter the password everytime when you want superuser access with the command sudo. So there is a way to solve it without sharing the root user access: add the user you log in as to