Sed How Match Unknown Amount Of Spaces

In recent times, sed how match unknown amount of spaces has become increasingly relevant in various contexts. unix - What does sed -i option do? I'm debugging a shell script and trying to find out the task performed by the following command: sed -i '1,+999d' /home/org_user/data.txt I need to change this command as its failing with the foll... What is the purpose of -e in sed command?

- Unix & Linux Stack Exchange. In your example sed 's/foo/bar/' and sed -e 's/foo/bar/' are equivalent. In both cases s/foo/bar/ is the script that is executed by sed.

The second option is more explicit, but that is probably not the reason that you often see -e used. The reason for that is that -e makes it possible to use more than one script with the same invocation of sed. unix - sed edit file in-place - Stack Overflow. How do I edit a file in a single sed command?

Currently, I have to manually stream the edited content into a new file and then rename the new file to the original file name. I tried sed -i, but my regular expression - Using sed to find and replace complex string .... Learn how to use sed with regex for complex string replacements in Unix systems. Find and replace with sed in directory and sub directories.

This perspective suggests that, i run this command to find and replace all occurrences of 'apple' with 'orange' in all files in root of my site: find ./ -exec sed -i 's/apple/orange/g' {} \\; But it doesn't go through sub directo... linux - sed with special characters - Stack Overflow. The single quotes around the sed body will prevent the shell from substituting any variables, so the $ on the left-hand side is escaped only to prevent its special regular expression meaning. What is sed and what is it used for? From Sed man page: Sed is a stream editor.

Moreover, a stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline). Moreover, while in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the input(s), and is consequently more efficient. How to use variables in a command in sed?

Asked 12 years, 1 month ago Modified 2 years, 4 months ago Viewed 201k times bash - Append text to file using sed - Stack Overflow. How can I write text to a file using sed? More specifically I would it add null variables to my blank text file that was created using touch.

The syntax of sed is very confusing to me. sed - Add text at the end of each line - Stack Overflow. 211 You could try using something like: sed -n 's/$/:80/' ips.txt > new-ips.txt Provided that your file format is just as you have described in your question.