Skip to main content

edX: Notes

edX.org — Take free online courses from the best universities and institutions in the world — Harvard, MIT, UC Berkeley, Microsoft, Tsinghua University, The Smithsonian and more.

Choose Audit Course

edX.org - Audit Course option

Popular posts from this blog

nmap - The Network Mapper

WARNING : It is ILLEGAL to scan hosts without permission.

Linux: compound commands

command1 ; command2 ; command3 command1 is executed, then command2, and then command3 command1 && command2 && command3 command2 is executed only if command1 run successfully (exit code is 0), command3 is executed only if command2 run successfully (exit code is 0) command1 || command2 || command3 command2 is executed only if command1 exit code is 0 (failure), command3 is executed only if command2 exit code is 0 (failure)