Bash: Use an alias in a variable

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http://unix.stackexchange.com – I am writing a bash script that runs each of its arguments as a command. This works for commands in my PATH, but not for aliases. I can directly call an alias in the script, but I can't call an alias that has been passed as an argument. The problem (I assume) is that aliases are expanded before variables. Is there a way to run aliases from a variable? Sample script: #!/bin/bash # File: runall shopt -s expand_aliases source ~/.aliases while (( "$#" )); do $1 shift done runall "echo test" works, but runall "myalias" gives runall: line 8: myalias: command not found (HowTos)