How do you remove multiple lines in Unix?

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 I delete multiple lines in Linux history?

You can use history -d offset builtin to delete a specific line from the current shell’s history, or history -c to clear the whole history. It’s not really practical if you want to remove a range of lines, since it only takes one offset as an argument, but you could wrap it in a function with a loop.

How do I delete all lines above VI?

Delete All Lines

  1. Delete All Lines.
  2. First, press Esc . Then, delete everything within the file by typing: :%d. …
  3. Move the cursor to the first line you want to remove. …
  4. Vim allows you to delete lines that match a specified pattern. …
  5. Firstly use Esc to move to normal mode. …
  6. Navigate to command mode with Esc .

22 апр. 2020 г.

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 . ( of course doesn’t fit for this question for real inplace) – thanasisp Sep 22 ’20 at 21:30.

27 июн. 2013 г.

How do you select multiple lines?

To select items that are not next to each other, follow these steps:

  1. Select the first item that you want. For example, select some text.
  2. Press and hold CTRL.
  3. Select the next item that you want. Important Be sure to press and hold CTRL while you select the next item that you want to include in the selection.

How do you copy multiple lines in vi?

Press the ESC key to be sure you are in vi Command mode. Place the cursor on the first line of the text you wish to copy. Type 12yy to copy the 12 lines. Move the cursor to the place where you wish to insert the copied lines.

How do you clear history on Linux?

Removing history

If you want to delete a particular command, enter history -d <line number> . To clear the entire contents of the history file, execute history -c . The history file is stored in a file that you can modify, as well.

How do I clear session history in Linux?

Clear the Current Session’s History

There’s your current sessions’ history, and there’s your long-term history. Our first command, history -c , deals with the current session. The history command is built into Bash itself, and the -c modifier tells the program to clear that history.

How do you clear history on zsh?

Clearing Zsh History (oh-my-zsh)

  1. close, quit and re-open iTerm.
  2. run nano .zsh_history.
  3. use the arrow keys to navigate to the part of your history you’d like to delete.
  4. use the delete key to remove all unwanted history logs.
  5. Once you’ve removed everything you’d like to remove, select control X to Exit .

6 сент. 2015 г.

What is difference between yank and delete?

Just as dd.… Deletes a line and yw yanks a word,…y( yanks a sentence, y yanks a paragraph and so on.… The y command is just like d in that it puts the text into the buffer.

How do I get rid of Vi?

To delete one character, position the cursor over the character to be deleted and type x . The x command also deletes the space the character occupied—when a letter is removed from the middle of a word, the remaining letters will close up, leaving no gap. You can also delete blank spaces in a line with the x command.

How do I delete everything in vi?

Immediately after opening a file, type “gg” to move the cursor to the first line of the file, assuming it is not already there. Then type dG to delete all the lines or text in it.

How do I remove the first 5 lines in Unix?

  1. 1 move to first line.
  2. 5 select 5 lines.
  3. d delete.
  4. x save and close.

How do I remove the last 10 lines in Unix?

Remove the Last N Lines of a File in Linux

  1. awk.
  2. head.
  3. sed.
  4. tac.
  5. wc.

8 нояб. 2020 г.

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.

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