Re: Controlling script execution without environment variables based on

[John Bartley K7AAY]

> John Bartley K7AAY (john.bart...@gmail.com) wrote:
> > Need to peek in a file, and based on what you see, conditionally
> > execute a subroutine in an XP batch file? Tired of trying to figure
> > out how to stuff a value into an environment variable?  Instead, use
> > GNU grep from gnuwin32.sourceforge.net and try:
> > grep CONDITION filename && goto JUST-DO-IT
> > rem DON'T DO IT - put commands here to perform if condition not met
> > goto OVER-IT
> > :JUST-DO-IT
> > put commands here to perform if condition met
> > :OVER-IT
> > The portion of the first command line after the && only executes if
> > the grep was successful. If grep found what you were looking for, the
> > script branches to JUST-DO-IT. If grep did not find what you were
> > looking for, the next line executes, and all lines below it, until you
> > hit the second goto which sends you over the the JUST-DO-IT branch,
> > and rejoins the script at OVER-IT.

On May 16, 7:32 am, ak...@chebucto.ns.ca (Richard Bonner) replied:
> ***   I have not used grep.

Dude, you HAVE to go to gnuwin32.sourceforge.net - the core utilities
and text utilities there, alongside the GNU version of grep for XP,
will make your day.  The XMLstarlet program is just icing on the
Timmie's doughnut, and has save my back bacon a considerable number of
times.

> Is it just a text string for which you are looking?

In a 17GB file. grep handled it nicely, so I used grep instead of
find.

> If so:
>
> TYPE filename.ext | FIND "string"
> IF ERRORLEVEL 1 GOTO JUST-DO-IT
>
> :DON'T-DO-IT
> (put commands here to perform if string not found)
> GOTO OVER-IT
>
> :JUST-DO-IT
> (put commands here to perform if string is found)
>
> :OVER-IT
>
>          Richard Bonnerhttp://www.chebucto.ca/~ak621/DOS/