Linux (CentOs7.8) operation and maintenance learning

linux operation and maintenance learning

1. Shortcut keys

• Tab
• ctrl + a jump to the beginning of the string
• ctrl + e jump to the end of the string
• ctrl + b cursor forward
• ctrl + f move the cursor back
• ctrl + k cut the character after the cursor
• ctrl + u cut the character before the cursor
• ctrl + l clear screen
• ctrl + insert copy command line
• shift + insert paste
• ctrl + r search used commands
• ctrl + z Pause command bg to run jobs in the background to view the running status
• ctrl + s lock screen
• ctrl + q to unlock
• esc +. Get the text after the previous command
• ! + Letter query the most recently used command
• !! Execute the last command

2. Common commands

• Basic help command command + --help
• Help command man + command
• Restart command shutdown -r now reboot
• Shutdown command shutdown -h now half poweroff
• New file touch file name`

touch a b c d
# 新建多个文档
touch {
    
    1..5}.txt

• Delete command rm

# 递归强制删除
rm -rf 文件/目录

• Show file path pwd
• Jump command cd

cd - 上一次目录
cd ..上一级目录
cd . 当前目录
cd ~ 家目录

• New directory mkdir

mkdir a/b/c -p     递归新建目录

• Show directory tree column tree

tree -L n		显示n层目录
tree -d			只显示目录