Some Bashrc tips

You can add it in .bashrc.

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alias mm='MC=`expr $MC + 1`; alias g$MC="$(history -p !!)"; echo `alias g$MC`'
alias gg='eval g$MC'
alias lg="alias | grep -e '^alias g[0-9]'"
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'mm' command saves the latest command you type.
'gg' command calls the saved command.
'lg' command show the list of saved command.