Bash, which is the default shell in Linux contains a whole lot of key bindings which makes it really easy to use . The most commonly used shortcuts are listed below :
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CTRL Key Bound
Ctrl + a - Jump to the start of the lineCtrl + b - Move back a char Ctrl + c - Terminate the command Ctrl + d - Delete from under the cursor Ctrl + e - Jump to the end of the line Ctrl + f - Move forward a char Ctrl + k - Delete to EOL Ctrl + l - Clear the screen Ctrl + r - Search the history backwards Ctrl + R - Search the history backwards with multi occurrence Ctrl + u - Delete backward from cursor Ctrl + xx - Move between EOL and current cursor position Ctrl + x @ - Show possible hostname completions Ctrl + z - Suspend/ Stop the command ALT Key Bound
Alt + < - Move to the first line in the history 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 + b - Move backward Alt + c - Capitalize the word Alt + d - Delete word Alt + f - Move forward 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 + backspace - Delete backward from cursor More Special Key bindings
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2T means Press TAB twice. And $ is the bash prompt.$ 2T - Display all available commands(common) $ string 2T - Display all available commands starting with string. $ /2T - Show entire directory structure including hidden ones. $ 2T - Show only sub-directories inside including hidden ones.$ *2T - Show only sub-directories inside excluding hidden ones. $ ~2T - Show all present users on system from "/etc/passwd" $ $2T - Show all sys variables $ @2T - Show all entries from "/etc/hosts" $ =2T - List output like ls or dir
