Hi,
> Am 14.04.2017 um 08:36 schrieb Edmond Yuen <[email protected]>:
>
> Please verify the script below:
>
> #/bin/bash
>
> D=`date +%Y%m%d`
> i="someparameter"
>
> echo $D_$i
> echo $D\_$i
> echo $D
> echo $i
> echo _
>
>
>
>
> // my system is debian with coreutils 8.26-3
> //
> // db=`date -d "-1day" +%Y%m%d`
> // i="0"
> This is the result from my system
>
> ~$ echo "$db_$i"
> 0
> ~$ echo "$db\_$i"
> 20170413\_0
> ~$ echo "$db$i"
> 201704130
The syntax is to use curly braces to limit the name of the varable:
echo "${db}_${i}"
-- Reuti
