| Command |
Description |
Examples |
| !! |
re-executes
the last command in C shell |
|
| !$ |
repeat the
last argument from the previous command |
|
| !* |
repeat all
arguments of the previous command |
|
| !n:p |
allows you to
see a command but not execute it. |
|
| !number |
repeats a
specific number command |
|
| alias |
The alias and
unalias utilities create or remove a pseudonym or shorthand term for
a command or series of commands. |
Change copy
(cp) to include a confirmation prompt before overwritting a file:
alias cp="cp -i" |
| history |
This utility
lists or edits and re-executes commands previously entered into an
interactive shell. |
$ history
339 man grep
340 pwd
341 grep banana ./*
342 history
$ r 340
pwd
/home/user2
$ |
| PS1 |
A variable
which can be changed by the user to alter the appearance of the
default shell prompt. |
$
PS1="new prompt$ "
$ PS1="$PWD $ "
|
| r |
Repeats a
command from the history list. |
170 pwd
171 ls
172 cd ~
$ r 170
|
| set
+ o vi |
Turns command
line editing on. |
|
| set
- o vi |
Turns command
line editing off. |
|
| set
prompt |
Sets the
default shell prompt in a C shell. |
% set
prompt="hello %" |
| set
prompt |
Sets the
default shell prompt in a C shell. |
|
| unalias |
The alias and
unalias utilities create or remove a pseudonym or shorthand term for
a command or series of commands. |
$ alias
cp="cp -i"
$ unalias cp |
| unset
history |
Turns history
tracking off. |
|