What is the advanced Linux?
Advanced Linux The Linux Shell and Toolkit
Based on the manual Introduction to Linux or comparable knowledge, it contains an introduction to the advanced use of the Bourne-Again Shell and shell programming which is enhanced through numerous practical examples.
Can I learn Linux in a day?
You can learn the basic Linux commands in a few days but it will likely take a few weeks to become more familiar with these commands. More advanced commands may take years for full mastery.