my first script :!)

[koder]

Congratulations

Onward and upward.

HM

On 03/05/2015 09:31 PM, Michael Havens wrote:
> Well, I know no one will really care but me but I have to share!
>
> I decided to follow the TLDP manual/workbook to learn BASH. I came to 
> this decision for a couple of reasons: the first being that it is 
> likely the most authoritative and the second was they have exercises 
> whereas the IBM pages didn't.
>
> Well, I read the first chapter and got to the exercises. The project 
> was to write a script that would print the date and time, who is 
> logged in, and what the uptime of the system is; the I am supposed to 
> ake all of that and print it to a file.
>
> I thought to myself, "But they haven't taught us anything!" I was 
> about to write to the user group I am part of and ask my infamous "how 
> do I" question when I stopped, took a breath, and figured I should at 
> least try to work it out on my own. So I figured the first line is a 
> pound sign and exclamation point but I was unsure of the order; was it 
> !# or #!. So it just so happens that this sequence of characters is 
> called a sha-bang so the exclamation point must come second. I'll try 
> that first.
> Then I burned some brain cells trying to figure how to run multiple 
> commands and print it all to a single file. I tried encapsulating 
> everything with curly brackets ({ }) but that gave an error of some 
> sort. Finally, after a couple of minutes, it came to me that they 
> probably want their readers to use a favorite search engine 
> (duckduckgo in my case). So after entering the parameters of the 
> search some hits came up and after looking through a few I found one 
> that fit my question. How could I not have realized how to do this? It 
> is merely using the append file redirection (>>)!  So this is what I 
> wrote:
>
> #! /bin/bash
>     date >><file>&
>     who >><file>&
>     uptime>><file>
> done
>
> Luckily I realized that for there to be a 'done' there also needs to 
> be 'do'. There is no 'do' therefore we don't need the 'done'.
> So I ran the program and everything seemed to run without error, 
> however, did it write the data to a file? I then go back to the 
> terminal and type 'more <file>'. Look at that! Everything is there.
>
> Thu Mar  5 20:44:36 MST 2015
>  20:44:36 up 9 days,  1:45,  2 users,  load average: 0.52, 0.55, 0.73
> bmike1   tty8         2015-02-24 19:00 (:0)
> bmike1   pts/2        2015-03-05 20:22 (:0.0)
>
> :-)~MIKE~(-:
>
>
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