Setting filename in BEGIN

Hello!

I try to process a hardcoded filename in my awk script, but is seems
to be harder to accomplish than i thougt first.

My minimal failing code example:

--

BEGIN {
ARGV[1]="filename"
}

{ print $0 }

--

Shouldn't awk read ARGV[1] after processing BEGIN to get the first
filename to work with?

Hope anybody can help me here.

Best regards,

Mario

--
Chaos reigns within.
Reflect, repent, and reboot.
Order shall return.

You also need to update ARGC.

Hello!

Like "ARGC=ARGC"?

When i put that statement in my BEGIN section, nothing changes, awk is
still waiting for input from STDIN.

Mario

--
Chaos reigns within.
Reflect, repent, and reboot.
Order shall return.

ARGC = 2 ## i.e., one more than the number of files you put in the ARGV array --
Chris F.A. Johnson <http://cfaj.freeshell.org>
================================================== ================
Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress
<http://www.torfree.net/~chris/books/cfaj/ssr.html>

<snip>

No, like incrementing it:

BEGIN {
ARGV[ARGC++]="filename"
}

{ print $0 }

Right, because you didn't change it.

Ed.

Doh! Right, that was it, thanks you!

Mario

--
Chaos reigns within.
Reflect, repent, and reboot.
Order shall return.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode test 33Switch to Hybrid Mode Switch to Threaded Mode

2 9th March 01:34 gazelle External User Posts: 1	Setting filename in BEGIN You also need to update ARGC.

3 9th March 01:34 mario domgörgen External User Posts: 1	Setting filename in BEGIN Hello! Like "ARGC=ARGC"? When i put that statement in my BEGIN section, nothing changes, awk is still waiting for input from STDIN. Mario -- Chaos reigns within. Reflect, repent, and reboot. Order shall return.

4 9th March 01:34 chris f.a. johnson External User Posts: 1	Setting filename in BEGIN ARGC = 2 ## i.e., one more than the number of files you put in the ARGV array -- Chris F.A. Johnson <http://cfaj.freeshell.org> ================================================== ================ Shell Scripting Recipes: A Problem-Solution Approach, 2005, Apress <http://www.torfree.net/~chris/books/cfaj/ssr.html>

5 9th March 01:34 ed morton External User Posts: 1	Setting filename in BEGIN <snip> No, like incrementing it: BEGIN { ARGV[ARGC++]="filename" } { print $0 } Right, because you didn't change it. Ed.

6 9th March 01:34 mario domgörgen External User Posts: 1	Setting filename in BEGIN Doh! Right, that was it, thanks you! Mario -- Chaos reigns within. Reflect, repent, and reboot. Order shall return.