Simon, Andrew, All:
Simon is correct. The correct switches will indeed allow you to write
the output of any command to a file. This works everywhere, because
everybody wants this kind of functionality--whether Mac, Windows, or
Linux/Unix.
It's called redirection, and it goes one of two ways:
Using the greater than symbol, namely '>' you send output somewhere.
Using my last example of the env command, here's a command that sounds
the output of env into a file:
env > my_environment.txt
The other direction reads input FROM somewhere.
The symbol for this is the less than symbol, i.e. '<' and takes
whatever is in the file as input into the command.
The uses of this second one are a bit harder for newbies to understand,
but trust me, you're going to love it.
Here's a quick and dirty example. Unfortunately, you first have to get
the gawk command installed, as the script below uses gaw.
If you have homebrew, the task is simple:
homebrew install gawk
Back to an example of indirection: Need to sum your monthly budget? Keep
your income and expenses in an ascii text file where the first word is a
number. Positive numbers are for income, and negative numbers for
expenses: eg.,
1000 weekly check from my boss for working too hard
-90 this months utility bill
Need comments in your file? No problem. Any first word not a number is
just ignored, and you can temporarily even take numbers out of the
calculation by commenting them, e.g.:
#70 cell phone service--just paid it
Now create the following as a script file, meaning take this content and
make it executable:
<cut here>
#!/bin/bash
gawk '{ sum += $1 }; END { print sum }'
<end script>
Bingo, you've got a script in a file, meaning you've got a new command.
I call mine 'sumit' as in sum it. So, if my income and expenses are in a
file called budget.txt, I can simply do:
sumit <budget.txt
And hear I've got 910 left.
Simon A Fogarty writes:
> Hi Andrew,
>
> Terminal should let you do what your after,
>
> With the listing of files and if you use the correct switchs you should be
> able to write the list of files and associated data to a file
> I know it's possible to do this in ms dos and power shell, so I would think
> linux etc would do the same thing.
>
> As for tab complete in the terminal,
>
> So long as you have the name correct to the point you hit the tab key then it
> should work for you.
> As long as there is a file or folder name with what your looking for.
>
> I use it when typing long commands like
> Sudo /Applications
> At the start of the creation of a bootable Usb flash drive.
>
> So as long as you have the name correct including any uppercase or symbols in
> the name then tab complete should be fine
>
>
>
> -----Original Message-----
> From: 'Andrew Lamanche' via MacVisionaries <[email protected]>
> Sent: Monday, 30 March 2020 3:22 AM
> To: 'E.T.' via MacVisionaries <[email protected]>
> Subject: A couple Terminal questions
>
> Hi,
>
> When working in Terminal and command line, is it possible to examine the
> window content with Voiceover? Say , ls -l command produces a list of files
> in the directory I am in. How can I examine each file and maybe even copy
> their names to clipboard or details about them if I were to use the -l flag,
> which would produce long information about each item.
>
> Secondly, reading a book on Command Line, one of the shortcut techniques the
> author teaches is to start typing the name of a directory to which one wishes
> to change and then pressing tab, which would result in Terminal completing
> the name or else giving a list of available names if there should be more
> than one. This doesn’t seem to work. When I press the tab, I hear the
> ominous bong bong. So this technique doesn’t work. Any thoughts on this?
>
> andrew
>
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