First, Shell introduction
The
Shell is a command interpreter that provides interaction between the user and the machine
supports specific syntax, such as logical judgment, looping
each user can have their own specific shell
CentOS7 default shell is bash (Bourne Agin shell)
also zsh, Ksh, II, History
History command The is the most recently entered command
Linux View history record plus time stamp tipsYou must know that you are familiar with bash. Use history to output historical commands that you have entered, such as[Email protected]_web ~]# History | More6./test.sh7 Vim test.sh8./test.shBut this shows only the command, and does not show the time to execute the command, because the ~/.bash_history of the Save
1, how to view the WPS history record?
In the running WPS document, click on the Blue "WPS text" in the upper left corner to see the recently opened file. As shown in the following illustration:
2. How to clear the WPS history record?
In fact, the key is how to delete the WPS history browsing record without being queried. Click "File--more
You can empty these histories at any time, but once you've emptied them, you don't want what you want!
Would you mind deleting the record I specified?
The answer is yes, here is a list of several commonly used historical record cleaning methods, the first method inside, you can delete the one you want to erase OH.
First Method: Custom Delete (that is, delete whichever history you want to remove)
In this case, Baidu, of course, the other pages of the i
How does the Mac Safari browser clean up history? I believe many people in the use of Mac, encountered a lot of problems, such as the Mac system Safari browser How to clean up the history. Most of the time, we may need to clean up our browsing history to protect our privacy, and then we'll teach you how to clean up the histor
Windows provides the file history feature, the following in the form of graphics and text to explain how to open the file history Win10 under the function.
The first step, open the Control Panel, in the large icon viewing mode, find and click on "File history."
The second step, in the file history inter
When browsing the Facebook album, did you find that the address of the address bar was changed as the page was refreshed and not hashed. It uses the HTML5 history new API, as a global variable of window, in the HTML4 era history is no new things. We often use History.back () and History.go ().
I always thought there was no way to do it until two days ago I saw the discourse founder of Robin Ward's solution
First, this article is an example showThree:
I just want to find an example, know how to use, use grammar and so on roll rough
With the search engine.
Own memo
Energy is always limited, yesterday an impulse, outside the Shanghai Pudong outside the ring booked a 90 meters house, to borrow money to raise down payment, loans and certificates and so on. HTML5 History related Knowledge points Phala Phala speak up is also a smelly and
Look at the title is not feeling very drag appearance, in fact, there is nothing, that is often said the single page application. This Web form in today's mobile is very popular, after all, on the mobile side frequently have to refresh the interface is not very friendly, but also cost traffic. Today we are going to make a small app (mobile) to uncover the secrets of history. First, let's look at the core approach:Window.history.pushState: Method: For
No10 Chen DengChen Yuanlong has a general position in the Romance of the Three Kingdoms, but he mentioned it as an inner when Cao collected Lu Bu. This person is just a conspiracy role and cannot be used in the elegant world. Do not compare it with contemporary heroes such as Kong Ming and Zhong Da, that is, there is a gap with second-stream figures such as guo jia and Cheng Jing. But is history true? None. On one occasion, a person named Xu Xiaoming
If you are reading this post you probably know about hidden lists in SharePoint sites. well, one of the hidden lists by default is the "workflow history" list. the greatest SharePoint workflow history flaws (in my opinion) is that they do not audit. this issue has been well known ented. the workflow history is cleaned out after 60 days. at this point you loose al
In Linux, clear the history and change histsize = 1000 to 0 or 1 in/etc/profile to execute Rm-RF. bash_history clear historyhistory-C when executing the command, do not write the command name into the history file, put it in the buffer, and then write it together when exiting, you can also call the history-W command to update the
1. pwd : Outputs the current working directorycommand format: pwd [OPTION] ...Example: [email protected] etc]# pwd/etc2. Echo: echo textCommand format:echo [Short-option] ... [STRING] ...Echo long-optionOptions: - N No line break after output text[[email protected] ~]# echo ' hello! 'Hello![[email protected] ~]# echo-n ' Hello 'Hello[[email protected] ~]#- e turn on the translation escape character (the following characters are encountered for special processing)\a : Alert Sound\b : Delete the p
[Email protected] ~]# history # View command history, command history exists in ~/.bash_history file ~]# !! # Indicates the execution of the previous command ~]# ls!$ # represents the last parameter of the previous command ~]#!950 # represents the No. 950 command in the history of the execution
It's a good habit that experienced Linux system engineers like to set up Bash's histsize/histfilesize so that they can log more history commands for later review, but one small problem is that the large amount of information that history records is Load into the memory, and has been kept in memory, so waste a lot of memory, according to the statistics of 100,000 historical records probably occupy about 10MB
window of the world how do I set up the cleanup history browsing record? Many netizens have kept the habit of regularly cleaning up the history of browsing the browser, this operation can make the operation of the browser smoother, at the same time, can also prevent their own browsing privacy is seen, so, small make suggestions: every netizen should keep the use of this habit! Well, window of the world how
by Zhangxinxu from http://www.zhangxinxu.comThis address: http://www.zhangxinxu.com/wordpress/?p=3432First, this article is an example showThree:
I just want to find an example, know how to use, use grammar and so on roll rough
With the search engine.
Own memo
Energy is always limited, yesterday an impulse, outside the Shanghai Pudong outside the ring booked a 90 meters house, to borrow money to raise down payment, loans and certificates and so on. HTML5
1. Under the Standby page, click on "Internet".
2. Click on the "bookmark" icon in the upper-right corner of the screen.
3. Click "History" on the right side of the bookmark.
4. Click the history you want to delete, and here is an example of choosing today's historical record.
5. Long record the history of the deletion until the pop-up dialog box,
Tags: style color io os using AR strong for dataSeptember 2014, Delphi Xe7 out, this time in the database technology, completely cast off from 1995Delphi 1.0 comes with the Borland database access technology. Thus declaring this continuingMore than 20 years of Delphi access to database technology into history.Throughout the 20 years of Delphi Database technology development, in fact, is also the history of Delphi. Through the database technologyChange
I do not know if you have experienced such a situation as an operational dimension:When one day your server abnormal situation, such as a file is inexplicably deleted, or a file has been tampered with, or even a security incident, and so on, then your manager found you want to find out, so you want to see the history of some unusual operation, When you finish the history command in the terminal, see the res
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