Hi all,
I noticed an obscurity which took me some time to debug. It seems that
AWK on Fedora Core has a different decimal separator (comma:,) than on
other Distro (point .) which leads to enourmous calculation
differences on different distros.

on Debian based systems:

$ cat /etc/*release*
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.1"
$ echo "12.345" | awk '{print $1+2}'
14.345
$ echo "12,345" | awk '{print $1+2}'
14
$

on Fedora Core:

Given a record that looks like:
Department: PEDIATRICS/TRIHEALTH

Using awk how can I print the record so it looks like:
Department: TRIHEALTH/PEDIATRICS

(basically print $2 and $1 with an OFS = "/"). I've tried several
iterations and.
just. can't. get. it. today.

Hi,

I have output which looks as follows
abc@xyz blah blah
something something something
othersomething othersomtheing othersomething

and the above 3 line repeated for some 100 times(with different
setting) so i have 300 lines. I want to get print
abc@xyz from 1st lineHi,

I have output which looks as follows
abc@xyz blah blah
something something something
othersomething othersomtheing othersomething

and the above 3 line repeated for some 100 times(with different
setting) so i have 300 lines. I want to get print
abc@xyz from 1st line

On Jul 11, 6:51 am, Spiros Bousbouras gmail.com> wrote:

Noone ? Ok , let's try a different approach. Has it ever happened to
you
that you found information out of date in the printed book ? If yes
how
serious was it ?

I found that when executing

status=system('myprog')

on Windows 2000, status is *always* zero afterwards,
even if myprog sets an exit code.

Can someone explain why this is so?

Is there a way to run an external program and get its exit
code on Windows?

Ronald

The O'Reilly version of "Effective awk programming" came out in
2001. The version on the GNU website (http://www.gnu.org/manual/gawk)
is copyrighted 2004, 2006. So I'm wondering are there important
differences between the online version and the printed version ?
Does anyone have any idea whether a more recent printed version is
planned ?

Hi,

I am trying to pretty print some data presented as a bunch of hex
bytes:

0xf0 0xd8 - for a 16 bit example.

I use:
#little endian build a number
arg = 0
for (i = fld + len; i > fld ; i--) {
arg = (arg * 256) + strtonum($(i))
}

And this does collect the multi byte number 0xd8f0 and I can print it
as 55536 in decimal.

The problem is the data is signed. So -1 is represented as one byte of
0xff - which the above conversion will give me as 255.

Since gawk actually holds numbers as double floats, how can I sign
extend the integer sign?

Thanks, Steve

I'm using gawk 3.1.0 (Windows native) and 3.1.6 (Cygwin). My input
file
contains fields which are separated by a vertical, optionally followed
by
spaces. Here is a small test program for this file format:

BEGIN {
print "run starts"
FS="| *"
}

{
print "processing line with",NF,"fields {",$0,"}"
}

When using the following 2-line input file:

# set art
0,1,4|set art

I get as output:

run starts
processing line with 3 fields { # set art }
processing line with 2 fields { 0,1,4|set art }

# awk 'BEGIN {min=9999999} $NF > max {max=$NF; maxline=$0}; $NF < min
{min=$NF; minline=$0} END {print max, maxline "\n" min, minline}'
access.log
3190709 192.168.1.200 - - [07/Jul/2008:15:53:38 +0000] "GET /700.xml
HTTP/1.0" 200 24634 3190709
193 192.168.1.200 - - [06/Jul/2008:21:25:40 +0000] "GET /audio/vm/
Numbers%%20(0).wav HTTP/1.0" 304 - 193

# awk 'BEGIN {min=9999999} $NF > max {max=$NF; maxline=$0}; $NF < min
{min=$NF; minline=$0} END {print max, maxline "\n" min, minline}'
access.log
3190709 192.168.1.200 - - [07/Jul/2008:15:53:38 +0000] "GET /700.xml
HTTP/1.0" 200 24634 3190709
193 192.168.1.200 - - [06/Jul/2008:21:25:40 +0000] "GET /audio/vm/
Numbers%%20(0).wav HTTP/1.0" 304 - 193