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(Revised 2010-7-2) page 96 of 145
“!”
Command Name
!
Description
Repeats the command in the history list identified by <command-
reference>.
!! – repeats the last command executed.
!<n> – repeats the command in the history list associated
with reference number <n>.
!<str> – repeats the most recent command that begins with
the string <str>.
Any non-whitespace characters that follow are appended to the
referenced command prior to its execution.
Syntax
!<n>
!<str>
Parameters
N
It is the reference number of the command from history list
that has to be repeated.
str
The most recent command from the history list that begins with
keyword str.
Examples
N-TRON/Admin#[1]> !!
Referenced command is not in the history list.
N-TRON/Admin#[2]> !1
Referenced command is not in the history list.
N-TRON/Admin#[3]> !s
Referenced command is not in the history list.
N-TRON/Admin#[4]> whoami
admin with privilege of Administrator
here comes the usage of “!” command
N-TRON/Admin#[5]> !w
whoami
admin with privilege of Administrator
N-TRON/Admin#[6]> !2
The above command will execute the second command, which is
available in history list.
N-TRON/Admin#[7]> !system
The above command will execute the latest command in the history list
that starts with system.
NOTES