Want To Learn Open Source Development, Git, and Linux? The Linux Foundation is Offering a New Course for Developers



  • Course designed to help developers with expertise in other operating systems to gain more Linux, Git and general open source knowledge and experience

    SAN FRANCISCO, June 6, 2018The Linux Foundation, the nonprofit organization enabling mass innovation through open source, today announced the availability of LFD201 – Introduction to Open Source Development, Git, and Linux, a training course focused on open source software, an introduction to Linux systems and the use of Git, the revision control system.

    The 2018 Open Source Jobs Report from The Linux Foundation and Dice, scheduled to be released later this month, will reveal that Linux is back on top as the most in demand skill by hiring managers seeking open source talent. After 65% of hiring managers reported seeking Linux talent in 2017, already down from 71% in the 2016 report, it has rebounded to take the top spot in 2018 at 80%.

    “Open source software development practices lead to better code and faster development, which is why open source has become the dominant model for how the world’s technology infrastructure is built and operates,” said Linux Foundation General Manager, Training & Certification Clyde Seepersad. “Git has also become the de facto standard for collaborative development, with tens of millions of projects using it. This is why it is imperative to make it easier for developers to master these systems, and this new course is a great first step in that journey.”

    LFD201 covers how open source software works, including advantages of using it, methods of working in OSS communities, governance models and licensing choices. It then examines Linux systems and a wide set of topics, including installation, desktop environments, text editors, important commands and utilities, command shells and scripts, file systems and compiling software. The final module gives a thorough introduction to Git, the source control system that arose out of the Linux kernel community, that enables widely distributed development to operate efficiently.

    The online course, accessible from anywhere in the world and only requiring a physical or virtual Linux environment – running any Linux distribution – contains 43 hands-on lab exercises that will allow students to practice their skills, as well as a similar number of knowledge check quizzes and more than 20 videos demonstrating accomplishing important tasks.

    The course objectives are to:

    • Obtain a strong foundation for working comfortably and productively in open source development communities
    • Learn to work comfortably and productively in a Linux environment
    • Master important Linux methods and requisite tools
    • Learn to use Git to create new repositories or clone existing ones
    • Learn to use Git to commit new changes, review revision histories, and examine differences with older versions
    • Learn to use Git to work with different branches, merge repositories, and work with a distributed development team.

    This course is addressed to those who are already experienced computer users and developers on another operating system, but have limited or no experience working in a Linux environment; and/or those who have already done some work on Linux systems and are looking to gain a good working grasp of Git.

    LFD201 was developed by Linux Foundation Director of Training Jerry Cooperstein, who has worked with Linux since 1994, developing and delivering training in both the kernel and user space. For the better part of two decades, Cooperstein worked on problems in nuclear astrophysics including supernova explosions, nuclear matter and neutron stars, general relativity, neutrinos and hydrodynamics at various national laboratories and universities in the United States and Europe. During that time, he developed state-of-the-art simulation software on many kinds of supercomputers and taught at both the undergraduate and graduate level. Cooperstein joined the Linux Foundation in 2009 as the Training Program Director.

    LFD201 is available to take now for $299. Students can register at https://training.linuxfoundation.org/linux-courses/development-training/introduction-to-open-source-development-git-and-linux.

    About The Linux Foundation

    The Linux Foundation is the organization of choice for the world’s top developers and companies to build ecosystems that accelerate open technology development and industry adoption. Together with the worldwide open source community, it is solving the hardest technology problems by creating the largest shared technology investment in history. Founded in 2000, The Linux Foundation today provides tools, training and events to scale any open source project, which together deliver an economic impact not achievable by any one company. More information can be found at www.linuxfoundation.org.

    The Linux Foundation has registered trademarks and uses trademarks. For a list of trademarks of The Linux Foundation, please see our trademark usage page: https://www.linuxfoundation.org/trademark-usage.

    Linux is a registered trademark of Linus Torvalds.

    # # #

    The post Want To Learn Open Source Development, Git, and Linux? The Linux Foundation is Offering a New Course for Developers appeared first on The Linux Foundation.

    https://www.linuxfoundation.org/press-release/want-to-learn-open-source-development-git-and-linux-the-linux-foundation-is-offering-a-new-course-for-developers/


 



Tmux Commands

screen and tmux

A comparison of the features (or more-so just a table of notes for accessing some of those features) for GNU screen and BSD-licensed tmux.

The formatting here is simple enough to understand (I would hope). ^ means ctrl+, so ^x is ctrl+x. M- means meta (generally left-alt or escape)+, so M-x is left-alt+x

It should be noted that this is no where near a full feature-set of either group. This - being a cheat-sheet - is just to point out the most very basic features to get you on the road.

Trust the developers and manpage writers more than me. This document is originally from 2009 when tmux was still new - since then both of these programs have had many updates and features added (not all of which have been dutifully noted here).

Action tmux screen
start a new session tmux OR
tmux new OR
tmux new-session
screen
re-attach a detached session tmux attach OR
tmux attach-session
screen-r
re-attach an attached session (detaching it from elsewhere) tmux attach -d OR
tmux attach-session -d
screen -dr
re-attach an attached session (keeping it attached elsewhere) tmux attach OR
tmux attach-session
screen -x
detach from currently attached session ^b d OR
^b :detach
^a ^d OR
^a :detach
rename-window to newname ^b , <newname> OR
^b :rename-window <newn>
^a A <newname>
list windows ^b w ^a w
list windows in chooseable menu ^a "
go to window # ^b # ^a #
go to last-active window ^b l ^a ^a
go to next window ^b n ^a n
go to previous window ^b p ^a p
see keybindings ^b ? ^a ?
list sessions ^b s OR
tmux ls OR
tmux list-sessions
screen -ls
toggle visual bell ^a ^g
create another window ^b c ^a c
exit current shell/window ^d ^d
split window/pane horizontally ^b " ^a S
split window/pane vertically ^b % ^a |
switch to other pane ^b o ^a <tab>
kill the current pane ^b x OR (logout/^D)
collapse the current pane/split (but leave processes running) ^a X
cycle location of panes ^b ^o
swap current pane with previous ^b {
swap current pane with next ^b }
show time ^b t
show numeric values of panes ^b q
toggle zoom-state of current pane (maximize/return current pane) ^b z
break the current pane out of its window (to form new window) ^b !
re-arrange current panels within same window (different layouts) ^b [space]
Kill the current window (and all panes within) ^b killw [target-window]
  • Make ISO from DVD

    In this case I had an OS install disk which was required to be on a virtual node with no optical drive, so I needed to transfer an image to the server to create a VM

    Find out which device the DVD is:

    lsblk

    Output:

    NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 465.8G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 464.8G 0 part ├─centos-root 253:0 0 50G 0 lvm / ├─centos-swap 253:1 0 11.8G 0 lvm [SWAP] └─centos-home 253:2 0 403G 0 lvm /home sdb 8:16 1 14.5G 0 disk /mnt sr0 11:0 1 4.1G 0 rom /run/media/rick/CCSA_X64FRE_EN-US_DV5

    Therefore /dev/sr0 is the location , or disk to be made into an ISO

    I prefer simplicity, and sometimes deal with the fallout after the fact, however Ive repeated this countless times with success.

    dd if=/dev/sr0 of=win10.iso

    Where if=Input file and of=output file

    I chill out and do something else while the image is being copied/created, and the final output:

    8555456+0 records in 8555456+0 records out 4380393472 bytes (4.4 GB) copied, 331.937 s, 13.2 MB/s

    Fin!

    read more
  • Recreate postrgresql database template encode to ASCII

    UPDATE pg_database SET datistemplate = FALSE WHERE datname = 'template1';

    Now we can drop it:

    DROP DATABASE template1;

    Create database from template0, with a new default encoding:

    CREATE DATABASE template1 WITH TEMPLATE = template0 ENCODING = 'UNICODE'; UPDATE pg_database SET datistemplate = TRUE WHERE datname = 'template1'; \c template1 VACUUM FREEZE;

    read more
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