Concept: variables #700
Concept: variables #700
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| Bash has two kinds of data: strings and arrays. | ||
| We'll talk about arrays later. | ||
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| You assign a variable like this |
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| You assign a variable like this | |
| You assign a variable (often shortened to var) like this: |
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Is it often shortened to var? That's news to me.
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Yes. I mean, your next line is varname and not variablename ;) Or you can avoid shortening it in the example.
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resolved this by using name="value" for the example.
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For teaching material, regardless, I do prefer using full names, even if it is often shortened in practice. Those that are not "acronyms and abbreviations as a first language" can then easily look up those words in an English dictionary, making interpretation and deciphering easier (especially on top of mult-language audience/readers being highly likely on this platform).
concepts/variables/introduction.md
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| Variables can also be called "parameters". | ||
| The difference is that a variable is assigned by you, the programmer. | ||
| A parameter can be a read-only variable that is set by the shell. |
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| Variables can also be called "parameters". | |
| The difference is that a variable is assigned by you, the programmer. | |
| A parameter can be a read-only variable that is set by the shell. | |
| Many variables are assigned by you, the programmer. | |
| Some variables are set automatically by the shell. | |
| These are called parameters. |
As far as I know, bash doesn't many any of those read only.
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How about just this, ignoring any subtle differences?
Variables can also be called "parameters".
The two terms will be used interchangably in this document.
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| ## Command Substitution | ||
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| A very frequent operation you will do in bash scripts is to capture the output of a command and store it in a variable. |
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This doc mentions "you" a whole lot and things "you will do". I think the prior doc was a little bit less ...directed?
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Well, I did lift most of the text from greycat for the last one. Maybe we can "put a pin in it" and revisit it after a few docs are written.
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I could modify the factoid messages and/or Wooledge wiki, if that helps :D
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Upon reflection, I'll circle back to the first concept to give it a rewrite in my voice.
| Bash has two kinds of data: strings and arrays. | ||
| We'll talk about arrays later. | ||
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| You assign a variable like this |
There was a problem hiding this comment.
Yes. I mean, your next line is varname and not variablename ;) Or you can avoid shortening it in the example.
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| ## Command Substitution | ||
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| A very frequent operation you will do in bash scripts is to capture the output of a command and store it in a variable. |
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I could modify the factoid messages and/or Wooledge wiki, if that helps :D
| @@ -1,10 +1,10 @@ | |||
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| "description": "Commands and Arguments in the Bash Guide", | |||
| "description": "\"Commands and Arguments\" in the BashGuide", | |||
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In prose should "Bash Guide" be two words? That is why in code we would CamelCase them, right?
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It's literally a WikiWord, but that's not no common anymore.
| Bash has two kinds of data: strings and arrays. | ||
| We'll talk about arrays later. | ||
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| You assign a variable like this |
There was a problem hiding this comment.
For teaching material, regardless, I do prefer using full names, even if it is often shortened in practice. Those that are not "acronyms and abbreviations as a first language" can then easily look up those words in an English dictionary, making interpretation and deciphering easier (especially on top of mult-language audience/readers being highly likely on this platform).
glennj
added
x:module/concept
Next concept: variables
This one is much more terse. I may have swung the pendulum too far.