How do you delete all lines containing the string foo in vi?
:g/foo/d – Delete all lines containing the string “foo”. It also removes line where “foo” is embedded in larger words, such as “football”. :g!/foo/d – Delete all lines not containing the string “foo”.
How do I delete everything on my Nano?
How to Delete Line in Nano?
- First, you need to press CTRL + Shift + 6 to mark the start of your block.
- Now, shift the cursor to the end of the block with the arrow keys, and it will outline the text.
- Finally, press CTRL + K to cut/delete a block and it will remove a line in nano.
How to delete lines containing a specific string in a text file?
Use the sed command to delete lines containing the specified string In the following example, we will use the action option of the sed command to delete lines containing the specified string in the text file. As follows, we delete the line that contains the string “sed” in the file. ➜ ~ sed ‘/sed/d’ text.txt
How to delete a range of lines in a sql file?
You can also delete a range of lines in a file. For example to delete stored procedures in a SQL file. This will remove all lines between CREATE PROCEDURE and END ;. I have cleaned up many sql files withe this sed command.
How to delete lines with specific string Besides SED?
There are many other ways to delete lines with specific string besides sed: And of course sed (printing the inverse is faster than actual deletion): You can use sed to replace lines in place in a file. However, it seems to be much slower than using grep for the inverse into a second file and then moving the second file over the original.
How to delete all lines in a Linux file?
Delete lines other than the first line or header line. Use the negation (!) operator with d option in sed command. The following sed command removes all the lines except the header line. > sed ‘1!d’ file linux.