Common shell skills

Let's take a look at some common shell tips.

CTRL + u Delete the cursor to the beginning of the current row

CTRL + k Delete the cursor position to the end of the current row

CTRL + a move the cursor to the beginning of the current row

CTRL + e move the cursor to the end of the current row

!! Repeat the previous command

Which executable file path search

Find [path] [parameter] [expression]

Find/etc/-name passwd find the passwd file under/etc

Find.-Name '*. conf'-exec CP {}{}. orig \; find all. conf files in the current directory and copy them. Add. orig to the filename suffix. ({} Is the search result, \; indicates that the command is terminated)

Find is very powerful, you can try it by yourself, various parameters-ctime,-user,-Perm,-type... and so on

Grep-I case-insensitive

-N print the row number

-V reverse matching

-A 5: displays the first five rows of the row.

-B 5: The last five rows of the row are displayed.

Awk-f \ t' {print $0> FILENAME "." $2} 'file is divided into multiple files by the second column