topic Re: ksh oddity - already known? in Operating System - Linux

ksh oddity - already known?

David G Ledger — Wed, 07 Jun 2006 06:00:14 GMT

Needing to get the contents of a ksh array into an awk environment, I was tying to generate a single ksh var that could be embedded into in-line awk.

In a spare shell, try:
$ set -A x a b c d
$ set | grep '^x\['
x[0]=a
x[1]=b
x[2]=c
x[3]=d
$ set | awk '/^x\[/ { print }'
x[0]=a
x[1]=b
x[2]=c
x[3]=d
4$ set | awk -F= '/^x\[/ { $2 = "\"" $2 "\""; print $1 "=" $2}'
x[0]="a"
x[1]="b"
x[2]="c"
x[3]="d"
$ y="$(set | awk -F= '/^x\[/ { $2 = "\"" $2 "\""; print $1 "=" $2}')"
$ echo "$y"
x[0]="a"
x[1]="b"
x[2]="c"
x[3]="d"
$ set | grep '^x\['
x[0]=a
x[1]=b
x[2]=c
x[3]=d
x[1]="b"
x[2]="c"
x[3]="d"

Unsetting does not remove the 'extra' values. It's not '"' specific; try it with text chars.

This may be known already, but I havn't heard of it.

$Revision: @(#) all CUP11.11_BL2002_1129_1 PATCH_11.11 PHCO_27019
Fri Nov 29 08:52:39 PST 2002 $
$ B.11.11_LR Feb 8 2002 01:58:34 $
Version 11/16/88

David

Re: ksh oddity - already known?

Robert-Jan Goossens_1 — Wed, 07 Jun 2006 06:09:23 GMT

David,

Try installing the latest ksh patch PHCO_33169

http://www4.itrc.hp.com/service/patch/patchDetail.do?patchid=PHCO_33169&sel={hpux:11.11,}&BC=main|search|

Regards,
Robert-Jan

Re: ksh oddity - already known?

David G Ledger — Wed, 07 Jun 2006 08:01:33 GMT

Thanks Robert-Jan

Downloaded patch and installed.

Now at
$ B.11.11_LR Nov 4 2004 06:32:21 $
Version 11/16/88
but it still happens.

Seem to have some problems with -o vi mode command line edits now as well.

David

Re: ksh oddity - already known?

Peter Nikitka — Wed, 07 Jun 2006 10:05:50 GMT

Hi David,

there is nothing wrong with ksh.
Your grep just gets the data of the value of variable $y as well:
print "$y"
x[0]="a"
x[1]="b"
x[2]="c"
x[3]="d"
To get all array elements of x, enter
print "${x[*]}"
a
b
c
d

You may even get more lines of output in setting
set yy='
x[0]="more"'

mfG Peter

Re: ksh oddity - already known?

David Ledger at Bham — Thu, 08 Jun 2006 03:55:42 GMT

Smacks forehead ...

Of course.

Thanks,
David

Re: ksh oddity - already known?

David G Ledger — Thu, 08 Jun 2006 04:06:34 GMT

No problem - a case of wood and trees.