[Discuss] Bourne Shell variable assignment question

[matt at mattshields.org (Matt Shields)]

On Thu, Dec 15, 2011 at 3:57 PM, Jerry Feldman <gaf at blu.org> wrote:

> I have not done my homework on this as much as I should.
> A coworker needs to set variable names and values input from another
> file. Normally, I would source that file, but he specifically wants to
> parse the file.
> So, in simple terms, he has a file that has something like:
> var1=foo
>
> Instead of sourcing he wants to parse the file using readline so he
> reads the variable name, then he wants to assign a variable of the same
> name.
> So, in his code he has something like
> readline
> ... - code to parse the line
> Where varname contains the variable name(eg var1), and value contains
> the value(eg foo)
>
> --
> Jerry Feldman <gaf at blu.org>
> Boston Linux and Unix
> PGP key id:3BC1EB90
> PGP Key fingerprint: 49E2 C52A FC5A A31F 8D66  C0AF 7CEA 30FC 3BC1 EB90
>
>
>
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>
Maybe not the most elegant way, but it works.  See below

Matts-MacBook-Pro:temp matt$ cat test1.sh
#!/bin/bash
var1=dog
var2=cat
var3=cow

Matts-MacBook-Pro:temp matt$ cat test2.sh
#!/bin/bash
myvar=`cat test1.sh | grep var2 | cut -d"=" -f2`
echo $myvar

Matts-MacBook-Pro:temp matt$ bash test2.sh
cow

Matthew Shields
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