Hacker Technology--linux Command line __linux

Many are consistent with regular expression re; 1. Modify last executed command

Remove redundant parts;

% grep fooo/var/log/auth.log
% ^o
% grep foo/var/log/auth.log

Replacement (Error or loss):

# Replace

% cat myflie
% ^li^il%
cat myfile


# missing% ansible vod-m command-a '

uptim '
% ^im^ime
% Ansible vod-m command-a ' uptime '

Advanced Replacement:

% ansible nginx-m command-a ' which nginx '
%!:gs/nginx/squid
% ansible squid-m ' command-a squid '
% ^nginx^squid^:g # zsh

2. Use command line to enter history

Query history

$ echo $HISTSIZE
$ echo $HISTFILE

$ history
$ history | Less
$ history 5

!$: Last parameter of previous command

$ mkdir Videos
$ cd!$

!^: first parameter of previous command

$ ls/usr/share/doc/usr/share/man
$ cd!^    

: t: Intercept the end of the path

$ wget http://nginx.org/download/nginx-1.4.7.tar.gz
$ tar-zxvf!$:t
tar-zxvf nginx-1.4.7.tar.gz
                # is equivalent to taking BaseName

: r: Intercepting filename

$ unzip Filename.zip
$ cd!$:r
CD filename

: E: File Development name ReferencesUse Linux command line to efficiently use Linux command line like hackers