unset command

Unset for the shell built-in directives, you can delete variables or functions. Grammar unset [-fv][variable or function name] Parameters: -F Deletes only functions. -v deletes only variables. Instance Delete environment variables

When the newly installed Git is not fully configured, using GIT push will have the following message: Warning:push.default is unset; Its implicit value was changing in Git 2.0 from ' matching ' to ' simple '. To squelch this message and maintain the

5.1 What time environment variables The bash shell uses a feature that becomes an environment variable to store information about the shell response and the work environment, which is why they become environment variables. It allows you to

gnuplot Command DaquanRun the gnuplot command at the Linux command prompt to start, enter quit or Q or exit. Plot command gnuplot> plot sin (x) with line Linetype 3 LineWidth 2 orgnuplot> plot sin (x) w L LT 3 lw 2 with line drawing,

Run the gnuplot command in the Linux Command Prompt to start it. Enter quit, Q, or exit to exit. Plot command Gnuplot> plot sin (x) with line linetype 3 linewidth 2 orGnuplot> plot sin (x) w l lt 3 LW 2% is drawn by line. The line type

We have introduced an article on how to choose the method of network fault elimination, and introduced three kinds of network troubleshooting methods. Here we return to the topic, through concrete examples to help you troubleshoot network failures.

There are many commands in the operating system. Maybe many of you know about Microsoft. Although Linux has developed since Microsoft, Linux has surpassed Microsoft in recent years. This article describes the Linux set command in detail, which plays

Original URL: http://www.mike.org.cn/articles/linux-linux-bash-command-search-mechanism/Turn from: Eric cheung:linux (BASH) command search mechanismThis article assumes that the environment is gnu/linux, and that the shell is bash;　　Note: In

How is the program executed? when the operating system starts, it waits for user action. So how does the user communicate with the operating system? How do you trigger program execution? Typically, interacting with the operating system, there

The declare and typeset commands are the built-in commands for Bash, both of which are exactly the same, used to declare shell variables and to set the properties of the variables.The Declare command (alias typeset) is a shell built-in command for