If statement

[uguess]

I have file like below

list
1

I want to write a script that will check the file and ad "zero" 0 in front if the number is less then 10. I have written below script but does not work. Please help.


tmp_LIST=`echo list`
len_tmp_LIST=`scat $tmp_LIST | awk '{print length}'`
if ($len_tmp_LIST -eq 1)
then
{
LIST=`echo 0$tmp_LIST`
cat $LIST
}
else
{
LIST=$tmp_LIST
}
fi

 

[PHV]

LIST=`awk '{printf "%02d",$1}' list`

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[feherke]

Hi

Put the [tt]if[/tt]'s condition between brackets, not parenthesis. Or use [tt]test[/tt]. Or write it as arithmetic evaluation :

if [ $len_tmp_LIST -eq 1 ]
then
[gray]# ...[/gray]
fi

[gray]# or[/gray]

if test $len_tmp_LIST -eq 1
then
[gray]# ...[/gray]
fi
[gray]# or[/gray]

if ((len_tmp_LIST==1))
then
[gray]# ...[/gray]
fi

Feherke.

http://rootshell.be/~feherke/

 

[uguess]

Thanks for your reply

The if condition is workign however the applying of "0" if the digit is less then 10 is not working can you please suggest what i should use. Echo or Cat

 

[feherke]

Hi

[tt]printf[/tt]. Exist in [tt]bash[/tt] and [tt]ksh[/tt]. But I think PHV's solution is the best for your problem.

Feherke.

http://rootshell.be/~feherke/

 

[PHV]

echo is for displaying values.
cat is for displaying file content.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[feherke]

Hi

I still not understand the theory of your script, but if you have only numeric values, the check could be much loosy. Otherwise would be better to check the type too. Some simple alternatives, maybe they will give you another idea :

while read one_value; do
  printf "%02d\n" $one_value
do < list_file

[gray]# or[/gray]

awk '$1=sprintf("%02d",$1)' list_file

[gray]# or[/gray]

sed '/^[[:digit:]]\([^[:digit:]]\|$\)/s/^/0/' list_file

They behave different for string values.

Feherke.

http://rootshell.be/~feherke/