bash history

the purpose of using computer resources. Due to the openness of Linux, there are many options for Shell in Linux, in CentOS 6.3, you can use the following Shell types:/bin/sh,/bin/bash,/bin/tcsh, and/bin/csh, the/etc/shells file shows which shells are available in the current system. Different shells have different features and operation methods. here we use the default Shell used in CentOS to explain the case of

historycommand history is typically recorded in a . bash_history file, with the default record of The history in the current shell is recorded in memory and will only be saved in . Bash_history after exiting.-C: empty command History-D Offset: Delete the specified offset command in historyN: Show recent nth history

students, and the only technology that is proud of is his cow technology. This is also not advisable. it is wise to ensure that you do not stick to the lowest level of science and then enrich your technology. Otherwise, there will be too many subjects, and the annoying retake of the exam will make you miserable. On the premise of strong technology, I have to have a scholarship to reward myself. By the way, I am using this money to make some valuable investment. Why not? This article starts fro

is set, and then the newly executed bash commands will be correctly timestamp. All commands earlier than this will display the time for setting the HISTTIMEFORMAT variable. 2. using Ctrl + R to search for historical Ctrl + R is a frequently used shortcut key. This shortcut allows you to search for command history, which is useful when you want to execute a command repeatedly. After finding the command, you

value is used as the formatted string of strftime. It is used to print the timestamp for each historical content when calling the history built-in command. If this variable is set, the timestamp is written to the history file so that it can be kept between shell sessions. Use the history comment character to differentiate the timestamp and command line. HOSTFIL

\vVersion of Bash\vBash release number, version number plus patch level\wCurrent working directory\wBasic parts of the current working directory\!The history number of this command\#Command number for this command\$If the valid UID is 0, that is #, the other case is $\nnnCharacter corresponding to octal number nnn\\A back slash\[The beginning of a non-printable sequence of characters that can be used to emb

, Korn also supports the alias function (used to replace a word with a user-defined string ). Korn has many other features that are disabled by default (such as file name completion), but can be enabled by users. Bourne-Again Shell Bourne-Again Shell (or Bash) is an open-source GNU project designed to replace the Bourne shell. Bash, developed by Brian Fox, has become one of the world's most popular shells (

Linux, which needsto be converted using DOS2 Unix command. 3 Basic features of Bash (1) History command and command completion1) Historical command history, in the form of:History [Options] [Historical command Save file]Where the-C option indicates the Purge history command (generally not recommended), and-w means tha

shell, the for in structure is used, and the command replacement is used to represent the list of files created from the standard output of the command ls '$1/* indicating the content of the specified sub-directory. In addition to other features defined above, Korn also supports the alias function to replace a word with a user-defined string ). Korn has many other features that are disabled by default, such as file name completion), but can be enabled by users. Bourne-Again Shell Bourne-Again S

, which needs to be converted using Dos2unix command.3 Basic features of Bash (1) History command and command completion1) Historical command history, in the form of:History [Options] [Historical command Save file]Where the-C option indicates the Purge history command (generally not recommended), and-w means that the

Implementation of WebKit history item management and webkit history itemsAccording to the standard definition, Page manages a Joint Session History, which contains the historical items of each sub-Frame. The logical relationship is as follows:From the above, we can see three layers: Page, Frame, and JS Binding interfaces. The core of page loading is Frame through

Reading history aims to understand the past, grasp the present, and explore the future. We are not a historian, and we are also ashamed to be a boring person who talks about the secret history of privilege at the dinner table. The only purpose is to better survive and live in the present age, seeking to fit with the times to develop more effectively, better grasp and predict themselves, so that the fate and