How to delete the first line of a file?
I want to delete 1st line and last line using shell command. -i option edit the file itself. You could also remove that option and redirect the output to a new file or another command if you want. You can also delete a range. For example, 1,5d would delete the first 5 lines.
How to delete first n lines in ASCII file?
If you want to eliminate 10 lines at the beginning of the file: tail -n +11 output_file (note that it’s +11 to eliminate 10 lines, because +11 means “start from line 11” and tail numbers lines from 1) or sed ‘1,10d’ output_file
How to remove first n lines of sql file?
This seems to be the easiest: Remove lines 1-42 from test.sql and save as test2.sql You can use Vim in Ex mode: Because of sed discrepancies across Linux and Mac, I resolved to use tail -n +43 dump.sql > new.sql format.
How to delete the first n lines of a file using SED?
You’d be far better served by cutting away the SQL commands. You can do this in two ways: The second version is slower but more accurate: it will ignore lines exactly beginning with “SQL> ” and ending in semicolon, which seem to describe the lines you want eliminated.
How to delete all files in a directory in Linux?
Linux Delete All Files In Directory. The procedure to remove all files from a directory: Open the terminal application. To delete everything in a directory run: rm /path/to/dir/*. To remove everything to remove all sub-directories and files: rm -r /path/to/dir/*. Let us see some examples of rm command to delete all files in a directory
Is there a way to remove the last line of a document?
Now just press d twice on your keyboard. This will do exactly what you want—remove the last line. After that, press : followed by x and then press Enter. This will save the changes and bring you back to the shell.
How to remove the last 12 characters of all files?
How can I remove the last 12 characters of all files’ filenames in a certain directory via Terminal? remove echo for actual action. Check for same output filename for multiple source files. Again this could result in a race condition, make sure you check the output from the dry-running carefully. You could use rename. From inside the directory: