# Ctrl + A - Go to the beginning of the line you are currently typing on

# Ctrl + E - Go to the end of the line you are currently typing on

切到命令行開始｜結尾

# Ctrl + L - Clears the Screen, similar to the clear command

清屏，類似于 clear 命令

# Ctrl + U - Clears the line before the cursor position. If you are at the end of the line, clears the entire line.

清除光標以前

# Ctrl + H - Same as backspace

退格鍵 backspace

# Ctrl + R - Let’s you search through PReviously used commands

從命令歷史中找

# Ctrl + C - Kill whatever you are running

終止命令

# Ctrl + D - Exit the current shell

退出 shell

# Ctrl + Z - Puts whatever you are running into a suspended background process. fg restores it.

??

# Ctrl + W - Delete the Word before the cursor

清除光標之前

# Ctrl + K - Clear the line after the cursor

清除光標之后

# Ctrl + T - Swap the last two characters before the cursor

# Esc + T - Swap the last two words before the cursor

切換光標前最后兩個字母（單詞）

# Alt + F - Move cursor forward one word on the current line

# Alt + B - Move cursor backward one word on the current line

??在 Ubuntu x windows終端中會切換到菜單！tty 可能可以

# Tab - Auto-complete files and folder names

自動補全

# Ctrl + Y - to paste it (as in delete and copy) all text in front of the cursor

粘貼（剛才 ctrl+w 或者 ctrl+k 的內容）

# Esc + . (or Esc + Underscore) - Insert Last Argument

??

# Ctrl + b - Move back a character

# Ctrl + f - Move forward a character

向前｜后移動一個字母

# Ctrl + r - Search the history backwards

??

# Ctrl + xx - Move between EOL and current cursor position

光標在當前位置和 EOL 之間切換（EOL end of line?但我實驗，是在開頭和當前位置之間切換，怎么理解？誰知道？）

# Ctrl + x @ - Show possible hostname completions

# Alt +

# Alt + > - Move to the last line in the history

# Alt + ? - Show current completion list

# Alt + * - Insert all possible completions

# Alt + / - Attempt to complete filename

# Alt + . - Yank last argument to previous command

# Alt + c - Capitalize the word

# Alt + d - Delete word

# Alt + l - Make word lowercase

# Alt + n - Search the history forwards non-incremental

# Alt + p - Search the history backwards non-incremental

# Alt + r - Recall command

# Alt + t - Move words around

# Alt + u - Make word uppercase

# Alt + back-space - Delete backward from cursor

# Here "2T" means Press TAB twice

# $ 2T - All available commands(common)

# $ (string) 2T - All available commands starting with (string)

# $ /2T - Entire directory structure including Hidden one

# $ 2T - Only Sub Dirs inside including Hidden one

# $ *2T - Only Sub Dirs inside without Hidden one

# $ ~2T - All Present Users on system from "/etc/passwd"

# $ $2T - All Sys variables

# $ @2T - Entries from "/etc/hosts"

# $ =2T - Output like ls or dir