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command argument

What is the maximum character length of arguments in a shell command? How do I find out the maximum length of arguments for a new process under Linux or Unix like operating systems?
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Q. I’m using CentOS Linux server. How do I insert the arguments to a previous command into the current input line or fix errors in previous commands quickly?

A. BASH History expansion is useful and time saving feature. To designates the last argument of the preceding command use !$

For example, consider following command:
$ cp /tmp/file.name /path/to/somewhere/directory/file.name
$ cp !$ /home/you

!$ will automatically expand into /path/to/somewhere/directory/file.name, thus calling last command argument. See HISTORY expansion section by typing man bash command for more information:
man bash