Ksh-88e shell array question

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3 total messages Started by lwv27 Wed, 19 Dec 1990 02:36

#1977

Author: lwv27
Date: Wed, 19 Dec 1990 02:36

40 lines
1300 bytes

I am attempting to turn a ksh variable into an array and then back
into the variable after manipulation.  Here is what I have:

==== Cut here ====

#! /bin/ksh


# Now convert this into an array

IFS=":" ; export IFS

set -A tbl $PATH

size=${#tbl[*]}

i=0
while [ $i -lt $size ] ; do
        echo "Table element $i is ${tbl[$i]}"
        ((i+=1))
done

lst="${tbl[*]}"
lst2="${tbl[@]}"
echo $lst
echo $lst2

exit 0

=== Cut Here ===

The problem is that I cannot figure out how to get the colons back into
the PATH.  What I want to be able to do is to null out entries all together,
so they are not even present.  What I would REALLY like to do is to
have something like an array 'shift' type mechanism I think!
--
Larry W. Virden                 UUCP: osu-cis!chemabs!lwv27
Same Mbox: BITNET: lwv27@cas    INET: lwv27%cas.BITNET@CUNYVM.CUNY.Edu
Personal: 674 Falls Place,   Reynoldsburg,OH 43068-1614
America Online: lvirden

Re: Ksh-88e shell array question

#1979

Author: andrew.d.hay
Date: Wed, 19 Dec 1990 13:07

29 lines
1530 bytes

In article <9012190340.AA20465@lilac.berkeley.edu>, lwv27@CAS.BITNET writes:
> I am attempting to turn a ksh variable into an array and then back
> into the variable after manipulation.  Here is what I have:
> 
[]
> 
> The problem is that I cannot figure out how to get the colons back into
> the PATH.  What I want to be able to do is to null out entries all together,
> so they are not even present.  What I would REALLY like to do is to
> have something like an array 'shift' type mechanism I think!

here's what i do with TERMCAP:

set -A TERMCAP $(infocmp -C)
typeset -i BIT=1
while [[ BIT -le ${#TERMCAP[@]} ]]
do	TERMCAP="${TERMCAP%:? }${TERMCAP[$BIT]} "
	(( BIT += 1 ))
done
set -A TERMCAP "$TERMCAP"
export TERMCAP

hope this helps...

-- 
Andrew Hay		+------------------------------------------------------+
Ragged Individualist	| 	You just have _N_O idea!  It's the difference    |
AT&T-BL Ward Hill MA	|	between _S_H_O_O_T_I_N_G a bullet and _T_H_R_O_W_I_N_G it!     |
a.d.hay@att.com		+------------------------------------------------------+

Re: Ksh-88e shell array question

#1981

Author: Wm E. Davidsen Jr
Date: Thu, 20 Dec 1990 03:35

25 lines
1047 bytes

  Well, when you have the final array of values...

LIM=${A[*]}
n=1
PATH=${A[0]}
while [ $n -lt $LIM ]; do
  PATH=$PATH:${A[$n]}
  let n=n+1
done


- or -

PATH=$(echo ${A[*]} | tr " " ":")

which is a lot simpler, but probably slower because it runs a process
instead of all being in ksh.

Let me know if one of these helps.
-- 
bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen)
    sysop *IX BBS and Public Access UNIX
    moderator of comp.binaries.ibm.pc and 80386 mailing list
"Stupidity, like virtue, is its own reward" -me

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