topic Re: Search in ksh array in Operating System - HP-UX

Search in ksh array

Praveen Bezawada — Mon, 19 Apr 2004 03:20:59 GMT

Hi
I have an array containing string entries
arr[0]=Entry1
arr[1]=Entry2
.
When given any string I need to check if that string is present in this array. In there any way of doing it apart from looping over the whole array.
Like in TCL we have,"array exists " Is there something of this syntax in ksh.
Any ideas or suggestions most welcome.

- Praveen

Re: Search in ksh array

Sanjay Kumar Suri — Mon, 19 Apr 2004 03:38:00 GMT

I have following solution

testa[0]=first
testa[1]=second
echo ${testa[1]}
echo ${testa[*]} | grep first >/dev/null
echo $?
echo ${testa[*]} | grep third >/dev/null
echo $?

It will give following output

second
0 # true
1 # false

sks

Re: Search in ksh array

Florian Heigl (new acc) — Mon, 19 Apr 2004 03:49:57 GMT

It might help to first check, if the entry is in the array and do the looping only if there was something found.

if `echo ${arr[*]} | grep searchstring \
2>&1 >/dev/null`
then
go looping
fi

[i hope the [*] was the correct way to address every value in the array, can't test it right now.]

Re: Search in ksh array

Sanjay Kumar Suri — Mon, 19 Apr 2004 03:59:07 GMT

Check this as well:

testa[0]=first
testa[1]=second
if `echo ${testa[*]} | grep ${testa[0]} > /dev/null`
then
echo "successful"
fi

sks

Re: Search in ksh array

Praveen Bezawada — Mon, 19 Apr 2004 04:01:57 GMT

and perhaps
grep -x
won't hurt.

Re: Search in ksh array

Sanjay Kumar Suri — Mon, 19 Apr 2004 04:11:54 GMT

No. It is hurting.

testa[0]=first
testa[1]=second
if `echo ${testa[*]} | grep -x ${testa[0]} > /dev/null`
then
echo "successful"
else
echo "unsuccessful"
fi

sks