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Shell Programming and Scripting

postitional parameters

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# 1  
Old 03-30-2010
postitional parameters
Is it possible and how would you use postional parameter to prompt user input?

I want to ask the user a question like the following:

Code:
Enter the tablespace_name to backup:

Read the response if it is 2,3, or so on ..

parse the answer into a statement like:

Code:
restore datafile 2, 3;

Is this possible if the user enters 2 or 3 or 4 tablespace_names?
# 2  
Old 03-30-2010
you can do that with read.

Code:
echo "Enter the tablespace_name to backup:"
read val1 val2
echo $val1 $val2

you might require some checks as per your requirement.
# 3  
Old 03-30-2010
No. It has to be dynamic.

It could be 2 vars or 3 vars or more.
# 4  
Old 03-30-2010
Code:
#!/bin/bash
read foo junk
echo $foo
echo  $junk


$ ./t foo junk rest

foo junk rest
foo
junk rest

Or:
Code:
#!/bin/bash
read foo
set $foo
echo $1 $2 $3 etc.

./t foo junk rest more
foo junk rest more
foo junk rest etc.

Last edited by Scott; 03-30-2010 at 06:11 PM.. Reason: Added code tags
# 5  
Old 03-30-2010
positional parameters and loading an array
How about this

HTML Code:
print "enter the tablespace_names: "

read INPUT

array=$(echo -e "$INPUT")

print ${#array[*]}
print  ${array[*]}
If I read the values into a variable like INPUT ( that would hold users, tools, and so on ) what is the must efficient way to chop that variable up and populate the array?

thanks.
# 6  
Old 03-30-2010
Try with the -a option of read
Code:
echo "Enter the tablespace_name(s) to backup:"
read -a TBLS
for ((i=0; i<${#TBLS[@]}; i++))
do
    echo "$i ${TBLS[$i]}
done

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