Repeat last shell command that started with a particular word

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Bash / CSH shell offers command history feature. Most of you may be aware and using of UP / DOWN arrow keys to recall previous commands. History expansions introduce words from the history list into the input stream, making it easy to repeat commands, insert the arguments to a previous ommand into the current input line, or fix errors in previous commands quickly.

To repeat last command that started with bar word type i.e. refer to the most recent command starting with string bar):

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