(this post if part of the material I cover in my devops course) Adding more commits In the previous post we have created our first commit. It was a new file that we added to our repository let's add more commits: Add file2 that is already in the working directory Add another file, this time inside a directory a change …

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Making sure you remember that we are talking about a local git repository here. That's right, that .git invisible directory, right inside your project directory. (this post if part of the material I cover in my devops course) Locations Consider this cli listing: 1$> 2$> pwd 3/home/osboxes/my-project 4$> ls -la …

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(this is a walk-through, so prepare your computer and let's play around with git) (this post if part of the material I cover in my devops course) Saving Versions in git This is the main thing in a version control system, isn't it? Let's say you have a project, so several files Installing git Git is basically a cli …

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(this post if part of the material I cover in my devops course) A short History of Git As always, the git-scm book (see below) does a great work about that here. To summarize: This is really the history of the creation of the Linux kernel In the early days.....changes to the software were passed around as patches and …

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(this post if part of the material I cover in my devops course) What happened to me when I did a small, single-person home project (this story has not really happen..but it could) Here's what used to happen to me in the past, when I was trying to backup my code. I was working on my files in place A (that was some …

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(these posts are part of the material I cover in my devops course) basics About Version Control About git First Repository The 3 states Exploring Commits git branches Git Merge Guide - part 1 Git Merge Guide - part 3 Remote Branches - part 1 Remote Branches - part 2 github 1A - Github Repository first Work with GitHub …

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Doing logic with [[ and ]] (this topic is covered in the bash manual here) Return a status of 0 or 1 depending on the evaluation of the bash conditional expressions example 1: is this a file? 1$> 2$> ls -l 3total 4 4-rw-rw-r-- 1 osboxes osboxes 6 Jan 21 08:39 myfile 5$> 6$> [[ -f myfile ]] 7$> echo $? 80 …

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Pipelines (this is covered in the bash manual here) A pipeline is a sequence of one or more commands separated by one of the control operators: | or |& The output of each command in the pipeline is connected via a pipe to the input of the next command. (if you want you can read more about pipes) These could be both …

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Introduction intro Hello World Parameters Special Parameters File Streams Bash Logic 1: pipelines and lists Bash Logic 2: Doing logic with [[ and ]] Bash Arrays Bash Expansions: About Shell Expansions Brace Expansion Tilde Expansion parameter and variable expansion command substitution arithmetic expansion is base on …

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streams In UNIX, many things take the form of a stream of bytes. Real files are like that, because we can read the as a stream of bytes. Each process see a private list of streams that the process can access There is a number for each stream used: 0,1,2,3,4…. These numbers are called file descriptors The first 3 …

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