The best way to clear floats (add this attribute to the parent element) .clearfix::after {content: “”; display: block; clear: both;} Select The first bit in the side-by-side element is set to this
Tag: foundation
CSS basic knowledge
1, derived selector div span{color:red}
2, id selector#diva{color:red}
3, id selector and Derived selector combined with #diva p{color:red}
4, class selector.divclass{color}, the
SHELL variable foundation detailed
1. Introduction to variables Variables are places where data is temporarily stored and data tags. The stored data exists in the memory space, and the data corresponding to the variable can be retri
Shell Programming Foundation-3
1. while loop
Syntax structure: while condition; do……; done
1) Infinite loop
While:
do
command
done
2) Endless loop
While 1
Do
command
PowerShell foundation
Windows powershell is a command-line shell and scripting environment, which is built into the operating system of win7 and above, so that command-line users and script writers can take advantage of
GREP Find shell foundation
1, define a command alias that is effective for all users, for example: lftps=’172.168.0.1/pub’
echo “alias lftps=’172.168.0.1/pub'” >> /etc/bashrc && source /etc/bashrc 2, display all lines
Linux foundation
Help command:
1.man [parameter] command, open help manual
1. Command: Man 1 CD, CD, CP, MV, Printf 2. System call: man 2 system function, fork() process
3. C language library function: man 3
LINUX basic article
One, the type of user
1. root administrator: all permissions (rwx)
2. file owner (u): who created Who owns
3. Main group (g): user group AAA {A1,A2}
4. Other users (o): does
Linux Foundation – Process and Service (1)
Process in Linux: an executable running instance that has been started
1, PID: process ID (each new process has a unique PID)
3, any process can create a child process
4, above re
Linux-shell script foundation – 2
1,User Group Add user
useradd
-u UID
-o -g specify GID or group name
-c comment information
-d home directory
-s shell
-G additional group
-r system user -m home directory, system user
-M