How do you delete multiple lines in Unix?

How do I remove a few lines in Unix?

To Remove the lines from the source file itself, use the -i option with sed command. If you dont wish to delete the lines from the original source file you can redirect the output of the sed command to another file.

How do I remove the first 10 lines in Unix?

Remove first N lines of a file in place in unix command line

  1. Both sed -i and gawk v4.1 -i -inplace options are basically creating temp file behind the scenes. IMO sed should be the faster than tail and awk . – …
  2. tail is multiple times faster for this task, than sed or awk . (

How do you select multiple lines in Unix?

Place your cursor somewhere in or next to the word you wish to select. Press Ctrl+D (Windows or Linux) or Command+D (Mac OS X) to highlight the entire word. Press Ctrl+D (Windows or Linux) or Command+D (Mac OS X) to select the next instance of the word. Repeat until you’ve selected the words you want to change.

How do you remove two lines of text when using VI?

Select your lines and type d to delete them. Move to the line you want to delete, either using the arrow keys or the j / k keys, and type dd . You can then save and exit by typing :x (or ZZ ). A number can also be prefixed to dd to delete multiple lines, e.g. 3dd deletes 3 lines.

How do I remove the last 10 lines in Unix?

It’s a little roundabout, but I think it’s easy to follow.

  1. Count up the number of lines in the main file.
  2. Subtract the number of lines you want to remove from the count.
  3. Print out the number of lines you want to keep and store in a temp file.
  4. Replace the main file with the temp file.
  5. Remove the temp file.

How do I remove the last line in Unix?

6 Answers

  1. Use sed -i ‘$d’ <file> to edit file in place. – …
  2. What would be for deleting the last n lines, where n is any integer number? – …
  3. @JoshuaSalazar for i in {1..N}; do sed -i ‘$d’ <file>; done dont forget to replace N – ghilesZ Oct 21 ’20 at 13:23.

How do I delete multiple lines in vi?

Deleting Multiple Lines

  1. Press the Esc key to go to normal mode.
  2. Place the cursor on the first line you want to delete.
  3. Type 5dd and hit Enter to delete the next five lines.

How do I remove lines from a file?

Using a Number to Delete a Line

  1. Open the file in read mode.
  2. Read the files contents.
  3. Open the file in write mode.
  4. Use a for loop to read each line and write it to the file.
  5. When we reach the line we want to delete, skip it.

How do I remove the first line in Unix?

Using the sed Command

Removing the first line from an input file using the sed command is pretty straightforward. The sed command in the example above isn’t hard to understand. The parameter ‘1d’ tells the sed command to apply the ‘d’ (delete) action on line number ‘1’.

How do you select multiple lines?

To select more than one row in the data view, click one row, then hold the Control (Windows) or Command (Mac) key and select each of the other rows you wish to edit or remove. To select a continuous list, click one row, then hold the Shift key and click the last row.

How do you select multiple lines in vi?

Place your cursor anywhere on the first or last line of the text you want to manipulate. Press Shift+V to enter line mode. The words VISUAL LINE will appear at the bottom of the screen. Use navigation commands, such as the Arrow keys, to highlight multiple lines of text.

How do you select multiple lines in VS code?

Here is the way:

  1. Select the lines you want to have multiple cursors.
  2. Simply hit Alt + Shift – I .
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