# VI/VIM #### Line Numbers vim can display line numbers using the below command: ``` :set number ``` ##### Skip to specific line number To skip to line 255: ``` :255 ``` ------------------------------------------------------------------------------------------------------------------------------------------ ##### Searching strings To search for a string in a text file, the / option can be used. In the below example, we're searching for the word test ``` :/test ``` To skip to the next found instance of the word, press the n key. ##### Search string on a range of lines In this example, I'm searching for the string 'test' on lines 1-100: ``` :1,100/test ``` ------------------------------------------------------------------------------------------------------------------------------------------ #### Deleting Lines Vim can delete lines using a number of methods ##### Remove X amount of lines. The below command would remove 5 lines from (and including) the current line: ``` :5d ``` ##### Remove a range of lines: ``` 1,5d ``` ------------------------------------------------------------------------------------------------------------------------------------------ #### Search and replace ##### Search and replace a word through the whole file: ``` :%s/wordtosearch/wordtoreplacewith ``` ##### Search and replace on specific lines We can couple the search and replace function of vim with the line number range tool. The below would find any instances of the word 'test' within the line range of 1-100, and then replace all instances of the word with 'testing': ``` :1,100s/test/testing ``` ------------------------------------------------------------------------------------------------------------------------------------------ #### Copy & pastse ##### Copy the currently selected line ``` :yy ``` ##### Copy a range of lines The below would copy lines 1-1000 ``` :1,1000y ``` ##### Paste the line: ``` p ``` ------------------------------------------------------------------------------------------------------------------------------------------ #### Saving & exiting ##### save and quit: ``` :wq ``` ##### don't save and quit ``` :q! ``` ##### Save as new file ``` :w newfilename ``` ------------------------------------------------------------------------------------------------------------------------------------------