appending space to variable

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# 1  
Old 02-04-2008
appending space to variable

I need to write a script where there the user enters 3 input parameter
the program should ask the user left or right
if it is left , the number specified that many spaces should be added to the value in front of the value and saved in the samee variable itself and if it is right that many number of spaces should be added in the right side

for ex
variable = vivek
number =4
and when user echo $variable output should be
if user opts for right then output = (4 spaces in front)vivek
if user opts for left then output =vivek(4 spaces in back)
# 2  
Old 02-04-2008
sample snippet in perl

$indendSpace += 2;
$spaceVar = " " x $indendSpace;

$var =~ s/^/$spaceVar #at the start
$var =~ s/$/$spaceVar #at the end

# 3  
Old 02-04-2008
I need it in korn shell

need it in korn shell
# 4  
Old 02-04-2008
Thanks but need it in korn shell
# 5  
Old 02-04-2008
Code snippets in ksh-93

$pad="    "
$ newvar=$pad$var
$ echo $newvar
$ echo ${#newvar}
$ echo "$newvar"
$ L=9
$ new=$(printf "%${L}s" "$var" )
$ echo "$new"

# 6  
Old 02-04-2008

echo "Input variable: \c" ; read var
echo "Input number: \c" ; read pad
echo "Input Left or Right padding (L or R): \c" ; read lr

lr=$(echo $lr | tr '[a-z]' '[A-Z]')

if [ "$lr" != "R" ] && [ "$lr" != "L" ]
        echo Invalid padding $lr !

while [ $pad != 0 ]
        if [ "$lr" = "R" ]
                var=$var" "
                let pad=$pad-1
                var=" "$var
                let pad=$pad-1

echo "[$var]"

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