Linux remove blank lines from file

 

To remove all blank lines from a file we can use sed command.

There are 2 ways to delete blank lines with sed

• Removing blank lines within the file.
• Redirecting std out to new file by removing blank lines from input file.

Example to removing blank lines within the file:

$ sed -i  '/^$/d' INPUT_FILE

Example to redirect std out by removing blank lines from input file:

$ sed '/^$/d' INPUT_FILE > NEW_FILE

or

$ cat INPUT_FILE | sed '/^$/d' > NEW_FILE

-Sany

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