bash - Replace Environment Variable in argument to shell script -

i've got shell script gets called arguments contain variable names. want variable replaced values. consider example below: solves problem, uses eval. want avoid eval security reasons.

#!/bin/bash # # example: # $> replace.sh arg '$var' # arg value  var=value args=$(eval echo $*)  echo $args 

works me like:

#!/bin/bash # # example: # $> replace.sh arg '$var' # arg value  var=value args="" arg in "$@"   arg="${arg/$/}" # remove preceding $ indirect variable expansion work   args="${args} ${!arg}" done  echo "$args"