topic Re: Shell script array in Operating System - HP-UX

Shell script array

Jason Tan — Tue, 21 Jan 2003 08:40:28 GMT

how to use array in shell script? can show me examples on how to assign/extract value on array? If i'm going to assign nearly thousand of value into array, can it support?

I have this situation, i got list A and list B. I need to compare value on list A and B and output ONLY value that is same on both list, got better idea others than diff command?

Re: Shell script array

Jdamian — Tue, 21 Jan 2003 09:17:34 GMT

Did you try 'comm' command ?

Re: Shell script array

john korterman — Tue, 21 Jan 2003 09:52:31 GMT

Hi,
an aexample of a ksh array (up to 1024). First, assign some values:

# list_A[1]="position no. 1"
# list_A[2]="position no. 2"
# list_A[0]="position no. zero"
# list_A[1023]="position no. 1023"

Then, show the content:

# echo ${list_A[0]}
position no. zero

# NUMBER=1022
# echo ${list_A[$NUMBER+1]}
position no. 1023

Regards,
John K.

Re: Shell script array

Carlos Fernandez Riera — Tue, 21 Jan 2003 10:05:09 GMT

some more commands:

sdiff
join

Re: Shell script array

Julio Yamawaki — Tue, 21 Jan 2003 12:56:26 GMT

Also, you can define a string using set -A a b c d e f

and address this VAR_NAME using
$VAR_NAME[0]....

Re: Shell script array

Stanimir — Wed, 22 Jan 2003 07:02:42 GMT

Try to use /after small modifications/ this:

for unm in `awk -F: '{print $1}' /etc/passwd`; do
par1=`grep "$unm" /etc/group`
if [ "$par1" = "" ]; then
echo "no matches for unm"
else
echo "$unm already has in /etc/group"
fi
done

Regards,Stan