arguments in command line


 
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# 1  
Old 07-27-2006
arguments in command line

Hi all,

How many arguments can we pass while testing a prgm at command line..
I encountered an issue while passing 10 arguments.
For $10 its taking argument passed for $1 followed by 'zero'.

can we pass more than 9 arguments /Is there any other way.

Thanks,
rrs
# 2  
Old 07-27-2006
Which shell you are using? If you are at ksh then you should have no problem with more than 9 arguments.
# 3  
Old 07-27-2006
Remember to refer to double digit args as ${10} and so on.
# 4  
Old 07-28-2006
Thanks blowtorch and shereenmotor.

-rrs
# 5  
Old 07-28-2006
Other way is to use "shift" operator.

$set you have the cap to learn from mistake. you will learn a lot in ur life.
$ echo $1 $2 $3 $4 $5 $6 $7 $8 $9
you have the cap to learn from mistake. you
$shift 1
$echo $1
have


Anyway ${10} was new thing for me but it worked.
# 6  
Old 07-28-2006
hi Dhruva,

I did n't get how 2 use shift operator.

My requirement is to run an interface in oracle apps whose driving script is
shell script.first i want to test shell script from unix.so i have to pass arg at
command line. though ${10} worked fine for me , i want to learn about
using shift also.plz explain.

rrs
# 7  
Old 07-28-2006
Ok Let me try.. Suppose you have passed 14 parameters in shell command line
and you are accessing those(i guess parameters names look familiar to you)...
In below example shift 5 results first 5 parameters are lost. at this point if you run $echo $1 it will output the sixth parameter you have passed.and if you echo $5 it will be the 10th parameter you have passed.I hope you understood now...
DB_LOGIN=$1
DB_USERID=$2
DB_USERNAME=$3
DB_REQUEST_ID=$4
P_ORG_ID=$5
P_Dummy=$6
P_COST_TYPE_ID=$7
P_PERIOD=$8
P_SORT_OPTION=$9
shift 5
after this shift $5 means 10th parameter $6 means 11th and so on $7 become 12 th $8 13th ......we could have done in other way like shift 9
so after this $1 become 10th parameter.....It is important to store positional parameters into othe variables because after shift previous values are lost
P_REPORT_OPTION=$5
P_COST_CENTER_FROM=$6
P_COST_CENTER_TO=$7
P_ITEM_FROM=$8
P_ITEM_TO=$9

Last edited by Dhruva; 07-28-2006 at 07:56 AM..
 
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