Shell Programming for Beginners(ontwik.com)
ontwik.com
Shell Programming for Beginners
http://ontwik.com/linux/shell-programming-for-beginners/
3 comments
When you link to a video, show it in the title. I am on a slow connection and am getting tired of waiting for a page to load, only to find out it is just a video and totally useless to me.
Indeed, from the guidelines:
If you submit a link to a video or pdf,
please warn us by appending [video] or
[pdf] to the title.
I'm so sorry about this
This is great background for newbies.
My kid is learning programming on a VM where he's admin. I went through the first example and discovered that I don't have banner on my machine. I apt-got it and realized this will be a nice learning opportunity for the kid, a tiny real-world hiccup and here's how you solve it and get on with the task.
My kid is learning programming on a VM where he's admin. I went through the first example and discovered that I don't have banner on my machine. I apt-got it and realized this will be a nice learning opportunity for the kid, a tiny real-world hiccup and here's how you solve it and get on with the task.
That alone sounds like a fascinating topic. How old is your kid? Did he ask to learn, or did you suggest it? What sorts of things is he doing? Etc.
My kid is 13.
He didn't ask to learn, I suggested it as a possible activity. I stressed that he doesn't have to want to. We'll know whether he's trying to please his old man or not after awhile. So far he's liked the new and foreign concepts.
We did a little bit last summer. Based on that experience I'm changing it up a little, in part by teaching a little more about surrounding concepts like the shell, and what processes are. This video came around at exactly the right time.
I showed him how to set up VirtualBox, create and destroy a VM, take snapshots and why you'd want to, how to install Linux on the box, and the basics of navigating the shell and running programs.
He's learning Python, with Vim and the Python REPL. Last summer I started him on Python 3.0, but this year I've had misgivings about that and he's doing 2.7, because if he does remain interested then any framework or other tool he's likely to use next will be pre-3.0-based.
He's admin on his own VM, because I want him to learn "Dad, how do I do this?" and then do it for himself, rather than "Dad, it says it needs your password again."
Last year we focused on Invent Your Own Computer Games With Python, http://inventwithpython.com/. It's a fine tutorial, and he/we got through as far as the hangman game. This summer I want to take a more broad perspective, so we'll probably work a little more holistically, sometimes focusing on the little things we're doing to get something working. Like, what is this shell that we're using to run things. Whatever book or similar resource we settle in with, I think we'll just dip into it occasionally, rather than it being the focus/curriculum.
Last year, as this, he used Vim, and had no trouble with it at all. I had him go through the first few parts of the Vim tutorial ($ /usr/local/bin/vimtutor), at first sitting next to him until I saw that he understood enough to progress on his own. Just enough to do basic editing. In sessions where we sat together I would notice when he repeated a task inefficiently, and if I saw it enough I would sieze the teachable moment and show him a better way, then get on with whatever we were focusing on. When he has a bit more Vim experience we'll probably have one or two Vim-focused sessions. Same for the shell, and administering his VM.
While the focus is on programming in general and Python more specifically, I'm trying to gradually make him aware of the wider sea that he's swimming in: how to read the python docs, how to learn something about the shell, man pages, focused google searches, what a process is and how to hunt them down and kill them, etc.
It has been surprisingly challenging to teach the idea of variables, types, loops, functions and other basic programming concepts that I take for granted. He's had more algebra in school this past year, and has another year of life behind him, and I think that's made a big difference in his perspective.
Most importantly it's something for us to do together. I think teaching your kid something significant is good for you and your kid. Programming is a useful skill, even if you don't end up being a programmer. But it could just as well be car repair or sewing, it's the experience itself that's the most important.
He didn't ask to learn, I suggested it as a possible activity. I stressed that he doesn't have to want to. We'll know whether he's trying to please his old man or not after awhile. So far he's liked the new and foreign concepts.
We did a little bit last summer. Based on that experience I'm changing it up a little, in part by teaching a little more about surrounding concepts like the shell, and what processes are. This video came around at exactly the right time.
I showed him how to set up VirtualBox, create and destroy a VM, take snapshots and why you'd want to, how to install Linux on the box, and the basics of navigating the shell and running programs.
He's learning Python, with Vim and the Python REPL. Last summer I started him on Python 3.0, but this year I've had misgivings about that and he's doing 2.7, because if he does remain interested then any framework or other tool he's likely to use next will be pre-3.0-based.
He's admin on his own VM, because I want him to learn "Dad, how do I do this?" and then do it for himself, rather than "Dad, it says it needs your password again."
Last year we focused on Invent Your Own Computer Games With Python, http://inventwithpython.com/. It's a fine tutorial, and he/we got through as far as the hangman game. This summer I want to take a more broad perspective, so we'll probably work a little more holistically, sometimes focusing on the little things we're doing to get something working. Like, what is this shell that we're using to run things. Whatever book or similar resource we settle in with, I think we'll just dip into it occasionally, rather than it being the focus/curriculum.
Last year, as this, he used Vim, and had no trouble with it at all. I had him go through the first few parts of the Vim tutorial ($ /usr/local/bin/vimtutor), at first sitting next to him until I saw that he understood enough to progress on his own. Just enough to do basic editing. In sessions where we sat together I would notice when he repeated a task inefficiently, and if I saw it enough I would sieze the teachable moment and show him a better way, then get on with whatever we were focusing on. When he has a bit more Vim experience we'll probably have one or two Vim-focused sessions. Same for the shell, and administering his VM.
While the focus is on programming in general and Python more specifically, I'm trying to gradually make him aware of the wider sea that he's swimming in: how to read the python docs, how to learn something about the shell, man pages, focused google searches, what a process is and how to hunt them down and kill them, etc.
It has been surprisingly challenging to teach the idea of variables, types, loops, functions and other basic programming concepts that I take for granted. He's had more algebra in school this past year, and has another year of life behind him, and I think that's made a big difference in his perspective.
Most importantly it's something for us to do together. I think teaching your kid something significant is good for you and your kid. Programming is a useful skill, even if you don't end up being a programmer. But it could just as well be car repair or sewing, it's the experience itself that's the most important.
Post of the day, maybe the week.
I have a seven year old daughter with a strong interest in hacking. Her old man just isn't quite sure how to get her going, but this summer we will try something or other.
I have a seven year old daughter with a strong interest in hacking. Her old man just isn't quite sure how to get her going, but this summer we will try something or other.
You might have a look at Scratch, a visual programming environment for kids. You plug variables and programming constructs together.
http://scratch.mit.edu/
Here's my Towers of Hanoi from a few years ago. It runs on Windows Firefox, but I can't get it to run on Linux Firefox or Chrome; Scratch and Linux's Java plugin must have parted ways in the intervening years.
http://scratch.mit.edu/projects/nfnaaron/93232
http://scratch.mit.edu/
Here's my Towers of Hanoi from a few years ago. It runs on Windows Firefox, but I can't get it to run on Linux Firefox or Chrome; Scratch and Linux's Java plugin must have parted ways in the intervening years.
http://scratch.mit.edu/projects/nfnaaron/93232
Update: I uninstalled iced tea, installed sun jdk 6, scratch now works fine with the new java plugin.
I believe it's such a wonderful thing you're getting to share with your son. Especially your humble approach of it being a shared hobby.
I'm a developer/designer because of both my parents influence. My mother was always interested in building, drawing and making things. While my father good at pulling things apart and back together again.
I've never really been able to talk much to my father but that he steered well enough - my father was born in Vietnam and has good English but not enough to fully understand every concept.
Yet he has helped guide me build my own computer and others with him, basic concepts of DOS and some trial an error skills.
I've always believed programming opens up our brains to understanding the world from a different perspective and that I hope one day to have a child also that takes an interest in what we do as a job/for fun with coding.
I'm a developer/designer because of both my parents influence. My mother was always interested in building, drawing and making things. While my father good at pulling things apart and back together again.
I've never really been able to talk much to my father but that he steered well enough - my father was born in Vietnam and has good English but not enough to fully understand every concept.
Yet he has helped guide me build my own computer and others with him, basic concepts of DOS and some trial an error skills.
I've always believed programming opens up our brains to understanding the world from a different perspective and that I hope one day to have a child also that takes an interest in what we do as a job/for fun with coding.
First test errored: line 4: test: too many arguments
This was on OSX + bash... wondering if I need to update something to allow more args through?
#!/bin/sh X=9 tput clear while test $X -gt 0 do tput cup 5 0 tput ed banner " $X" X='expr $X - 1' sleep 1 done
This was on OSX + bash... wondering if I need to update something to allow more args through?
#!/bin/sh X=9 tput clear while test $X -gt 0 do tput cup 5 0 tput ed banner " $X" X='expr $X - 1' sleep 1 done