shell history and Tab completion

Question 1

to exit out of “reverse search” in shell, type:

Answer 1

ctrl g

Question 2

to enter the reverse search type:

Answer 2

ctrl r

Question 3

your history files are stored in your?

Answer 3

home directory

Question 4

These are some common stored history commands files:

Answer 4

~/.bash_history
~/.history displays the shell history with numbers
~/.histfile

Question 5

the _______command controls the number of commands to retain in history

Answer 5

HISTSIZE (default is 500)

Question 6

You can use your ______ key to autocomplete:
commands
files, directories,paths
environmental variables
Usernames

Answer 6

tab

Question 7

This command displays your shell history:

Answer 7

history

Question 8

If you want to increase your history size, use this command:
and place it in your personal initialization files

Answer 8

export HISTSIZE=whatever number you want

Question 9

To see a certain or Rerun a command line number in your history, type

Answer 9

!N or “Bang” and the number

Question 10

to repeat the previous command line

Answer 10

!! or bang bang

Question 11

to repeat the most recent command starting with “string”

Answer 11

!string

Question 12

What does this command represent

! : N

Answer 12

<EVENT> <Separator><Word>
! Represents a command line ( or event )
! = The most recent command line
! = !!
\: N Represents a word on the command line
0 = command, 1 = first argument, etc.
</Word></Separator></EVENT>

Question 13

More short cuts -

!^

Answer 13

Represents the first argument.
!^ is the same as ! : 1
!$ represents the last argument

examples-
user$ head.files.txt sorted_files.txt notes.txt

!^ = files.txt
!$ = notes.txt