Laruence Linux private kitchen (basic)-Chapter 5: Online man page for First Login

Source: Internet
Author: User
Tags bcbc lenovo
1. x switching between winsows and text mode

● [CTRL] + [alt] + [F1] ~ [F6]: text interface to log on to tty1 ~ Tty6 terminal.
● [CTRL] + [alt] + [F7]: graphic interface desktop.

In the two login modes of Linux, a logon environment with only plain text interfaces (the so-called execution level 3) can have tty1 ~ Tty6 Terminal interface, but there is no graphical window interface environment. The other is the graphical interface login environment (the so-called execution level 5), which
Tty1 ~ Tty7, where tty7 is the default graphical environment after the boot is complete.

The command to start the X Window in Linux in plain text is startx.


2. Command for displaying time and date: Date

// 1. Use Finlay @ finlay-Lenovo-G470 directly :~ /Download $ date Friday July 12, 2013 17:33:04 CST // 2. format the output Finlay @ finlay-Lenovo-G470 :~ /Download $ date + % Y/% m/% d2013/07/12
3. display time and date: Cal

// 1. Output calendar Cal of the current month // 2. Output calendar Cal of the year 2013 // 3. Output calendar Cal of a Month 7 2013
4. Simple calculator: BC

finlay@finlay-Lenovo-G470:~$ bcbc 1.06.95Copyright 1991-1994, 1997, 1998, 2000, 2004, 2006 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. 4+9*(3-2)13

To calculate decimal places in BC, use scale to set the decimal places.

finlay@finlay-Lenovo-G470:~$ bcbc 1.06.95Copyright 1991-1994, 1997, 1998, 2000, 2004, 2006 Free Software Foundation, Inc.This is free software with ABSOLUTELY NO WARRANTY.For details type `warranty'. scale=61/8.125000

5. Use of the tab key
6. Online Help System

● Man page




● Info page

The usage of info is similar to that of man. It is used to query command usage or file format. Info page splits the file data into one paragraph, and each section is written on its own page, in addition, there is a "HYPERLINK" similar to a webpage in each page to jump to different pages. Each Independent page is also called a node ).



7. Ultra-simple text editor: Nano
8. Correct shutdown Method

● Write data synchronously to the sequence in the hard disk: sync

● The usual shutdown command: Shutdown

● Restart and shut down: reboot, halt, and poweroff

● Switch execution level: init

Run level 0: Shutdown
Run level 3: plain text mode
Run level 5: graphic interface mode
Run level 6: restart

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.