Shulou(Shulou.com)06/01 Report--

1. Linux system commands

Ls displays files or directories

-l list file details list

-an all files and directories in the current directory, including hidden all

Mkdir create directory

-p create a directory, if there is no parent directory, create

Touch creates an empty file

Echo creates a file with content

Cat views the contents of the file

More and less display text file content in paging

Rm deletes a file

-r Recursive deletion, subdirectories and files can be deleted

-f forcibly delete

Find searches the file system for a file

Wc counts the number of lines, words and characters in a text.

Grep looks for a string in a text file

Rmdir delete empty directory

Tree digital structure display, but need to install plug-in

Pwd displays the current directory

Ln creates a linked file

Head and tail display the header and tail of the file.

* add standard users

Useradd-m username1 additional create user home directory

Passwd username1

Usermod-a-G sudo username1 is attached to the specified user group

Chsh-s / bin/bash username1 with additional bash shell operation permissions

II. Linux service commands

Service restart

Restart the established system service

Service status

Check whether a service is enabled

Update-rc.d enable

Add a service to boot

Update-rc.d disable

Remove a service from boot self-boot

Update-rc.d enable 5

Add a service to boot and set the startup priority

III. Text editing commands

Vim usage

: set number displays the line number

: set nonumber hides line numbers

/ apache look for apache in the document and press n to jump to the next, shift+n

Yyp copy the line of the cursor and paste

H j k l corresponds to left, bottom, top, and right

Nano command

The command is a class terminal graphical interface that supports combined key operations.

Leafpad

This command opens a file as a command. If not specified, a file is created.

4. Kali tool command

Common format:

Tool name parameter path link address port

For example:

Sqlmap-u URL parameter library parameter table parameter fields

Hydra parameter file parameter file parameter address port

Ssh user name @ address

Mysql-u user-p

5. Linux users and permissions

User and user group management

/ etc/passwd stores user accounts

/ etc/group Storage Group account

/ etc/shadow stores the password of the user account

/ etc/gshadow stores the password of the user group account

Only one user is added to the useradd user name

Userdel username deletes a user

Add a user to the adduser user name (automatically create a home directory)

Groupadd group name create a group

Groupdel group name deletes a group

Passwd root sets the password for root

VI. Compression and decompression of files

Tar command

Unpack: tar zxvf filename.tar

Packaging: tar czvf filename.tar dirname

Gz command

Decompress 1:gunzip filename.gz

Compression: gzip filename

.tar.gz and .tgz

Decompress: tar zxvf filename.tar.gz

Compression: tar zcvf filename.tar.gz dirname

Compress multiple files: tar zcvf filename.tar.gz dirname1 dirname2...

Zip command

Decompress: unzip filename.zip

Compression: zip filename.zip dirname

VII. Installation of software packages

Rpm package-can be installed directly in Red Hat Linux, SUSE, Fedora, but not recognized in Ubuntu

Deb package-is a patent of ubuntu. Double-click the deb package in ubuntu to enter the automatic installation process.

Install the deb package

Dpkg-I installation package name

If it's redhat linux,

Rpm-ivh installation package name

If it is a zip package, extract it directly, and then find a similar link file such as install before you can install it.

VIII. Apt-get

Apt-get [options] command

Common commands:

Update retrieves updated package list information

Upgrade performs an upgrade

Install installs new software packages

Remove uninstall package

Purge uninstalls and clears the configuration of the package

Automove uninstalls all packages that are automatically installed and no longer in use

Dist-upgrade release upgrade

Clean deletes all downloaded package files

Autoclean deletes downloaded old package files

Apt search lookup package information

Install vm virtual machine enhancement tools

Apt install open-vm-tools-desktop fuse Virtual Machine Enhancement tool

10. Install Chinese input method

Apt-get install fcitx fcitx-googlepinyin

Im-config input method configuration fcitx is a framework, Little Penguin

11. Axel multithreaded breakpoint continuation tool

Axel command line under the multithreaded download tool, support breakpoint continuation, the following are axel installation and use tips, several times faster than wget download speed

Basic usage:

Axel [option] [download directory] [download address]

-s [x]: specify the maximum number of bits downloaded per second

N [x]: specifies the number of threads open at the same time

-o f: specify the local output file

-S [x]: search for images and download from X servers server

-N: do not use proxy server

-v: print more status information

-a: print progress information

XII. Encryption tools

Apt-get install network-manager-pptp network-manager-pptp-gnome

Find / etc/NetworkManager/NetworkManager.conf

Change the managed = false of the last line to managed = true

Note that when creating a new PPTP × ×, select "use point-to-point encryption" in the advanced properties.

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