How do I remove blank lines from text on Unix?
The simple solution is to use the grep command (GNU or BSD) as shown below.
- Delete blank lines (not including lines with spaces). grep file.txt.
- Delete completely blank lines (including lines with spaces). grep “/S” file.txt.
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What command is used to remove a word in Linux?
The following shortcuts are used to delete text on the command line: Ctrl+D or Delete – Deletes or deletes the character under the cursor. Ctrl+K – Deletes all text from the cursor to the end of the line. Ctrl+X then Backspace – Deletes all text from the cursor to the beginning of the line.
Can a sed command remove lines from a file?
Note: In all of the examples above, the sed command prints the contents of the file to the Unix or Linux terminal by removing the lines. However, the sed command does not remove the lines from the source file. To remove the lines from the source file itself, use the -i option with the sed command.
Is there a way to remove the entire paragraph in SED?
One, using the sed pattern combination with the “d” (delete) hits entire lines, as you noticed. The solution would seem to use the “s” (substitute) form: BUT then you discover the bigger problem: sed by default does everything it processes one line at a time (e.g. it fills its processing buffer until each ‘ ‘ is encountered) .
When to use sed only between specific lines?
Are those specific line numbers known at the time you invoke sed, or are there regions in the file that depend on the data itself? Like sed should be active only between certain start and end markers? In that case, I’d use awk, because you can keep state variables between lines. — Csaba Toth
When to use sed to replace a multi-line string?
Theoretically speaking, there is no upper limit on the size of the pattern space window. When the file size is small, we can practically afford to load the entire file into the pattern space to replace a multi-line string. So let’s learn this gobbling technique to solve some use cases.
