{{tag>InProgress}}

#### Task1 Introduction

本部分主要介绍一些命令的参数,介绍copy和move命令,以及访问文件和文件夹的方式等.

#### Task2 Accessing Your Linux Machine Using SSH (Deploy)

在Part1中我们可以通过浏览器连接到Linux机器上,这是因为我们使用的是SSH进行远程登录.

**What is SSH & how Does it Work?**

SSH:Secure Shell是一个协议,用于将两台设备间的通信加密.

**Deploying Your Linux Machine**

布置你的Linux机器,直接点击Start Machine按钮即可

**Deploying the TryHackMe Attackbox**

这个按钮在整个网页的最上方,点击Start AttackBox即可

**Using SSH to Login to your Linux Machine**

我们需要获得远程设备的IP地址,以及正确的登录凭证.这里IP/PW分别是tryhackme,tryhackme

所以对应的登录指令为:

<konsole root>
root@ip-10-10-12-38:~# ssh tryhackme@10.10.37.165
The authenticity of host '10.10.37.165 (10.10.37.165)' can't be established.
ECDSA key fingerprint is SHA256:c/FrwCJJWUnNtf5/6wsQvZ0PM618AoDIbP9CJ465Kgk.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '10.10.37.165' (ECDSA) to the list of known hosts.
tryhackme@10.10.37.165's password: 
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-1047-aws x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Mon May 27 13:22:08 UTC 2024

  System load:  0.52              Processes:             111
  Usage of /:   26.8% of 7.69GB   Users logged in:       0
  Memory usage: 23%               IPv4 address for eth0: 10.10.37.165
  Swap usage:   0%

The list of available updates is more than a week old.
To check for new updates run: sudo apt update


The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

tryhackme@linux2:~$ 
</konsole>

#### Task3 Introduction to Flags and Switches

每条命令都带有一些参数,比如ls命令,它用于列表所有当前目录的文件和文件夹.

如果后面加-a(是-all的缩写),会增加隐藏文件的显示.对任意命令后面加--help可以获取关于该命令的帮助.提供所有相关参数和解释说明.

<konsole>
tryhackme@linux2:~$ ls --help
Usage: ls [OPTION]... [FILE]...
List information about the FILEs (the current directory by default).
Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.

Mandatory arguments to long options are mandatory for short options too.
  -a, --all                  do not ignore entries starting with .
  -A, --almost-all           do not list implied . and ..
      --author               with -l, print the author of each file
  -b, --escape               print C-style escapes for nongraphic characters
      --block-size=SIZE      with -l, scale sizes by SIZE when printing them;
                               e.g., '--block-size=M'; see SIZE format below
  -B, --ignore-backups       do not list implied entries ending with ~
  -c                         with -lt: sort by, and show, ctime (time of last
                               modification of file status information);
                               with -l: show ctime and sort by name;
                               otherwise: sort by ctime, newest first
  -C                         list entries by columns
      --color[=WHEN]         colorize the output; WHEN can be 'always' (default
                               if omitted), 'auto', or 'never'; more info below
  -d, --directory            list directories themselves, not their contents
  -D, --dired                generate output designed for Emacs' dired mode
  -f                         do not sort, enable -aU, disable -ls --color
  -F, --classify             append indicator (one of */=>@|) to entries
      --file-type            likewise, except do not append '*'
      --format=WORD          across -x, commas -m, horizontal -x, long -l,
                               single-column -1, verbose -l, vertical -C
      --full-time            like -l --time-style=full-iso

</konsole>

查询命令还可以使用Man(ual)页面,除了Linux设备自带,网上也可以查.https://linux.die.net/man/

比如man ls表示显示ls的命令说明.

命令说明可能会很长,可以使用方向键进行上下滚动,在命令后添加-h可以得到人类易读的版本.

:question: What directional arrow key would we use to navigate down the manual page?
<WRAP spoiler>down</WRAP>

:question: What flag would we use to display the output in a "human-readable" way?
<WRAP spoiler>-h</WRAP>

#### Task4 Filesystem Interaction Continued

#### Task5 Permissions 101

#### Task6 Common Directories

#### Task7 Conclusions and Summaries

#### Task8 Linux Fundamentals Part3