History Recall

History recall allows a previous statement to be quickly recalled and re-executed. It's a very fast shorthand, especially in the edit/compile/debug loop or to fix a typo. For convenience, "!" is taken as an ordinary character if followed by white space, "=", "~" or "(".

If you want, you can choose different characters to introduce history references by changing the histchars variable.

	Command	Meaning
	!!	Last command
	!^	First argument word of last command
	!$	Last word of last command
	!*	All arguments of last command
	!n	Command n
	!-n	nth command from the last
	!str	Last command starting with str
	!?str?	Last command containing str
	%str1%str2%	Substitute str2 for str1 in last command. (Used only at the beginning of a line.)