I have a text file which has a particular line something like sometext sometext sometext TEXT_TO_BE_REPLACED sometext sometext sometext I need to replace the whole line above with This line is removed by the admin. The search keyword is TEXT_TO_BE_REPLACED I need to write a shell script for this. How can I achieve this using … Read more
I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal … Read more
I’m using jq to parse a JSON file as shown here. However, the results for string values contain the “double-quotes” as expected, as shown below: $ cat json.txt | jq ‘.name’ “Google” How can I pipe this into another command to remove the “”? so I get $ cat json.txt | jq ‘.name’ | some_other_command … Read more
I am trying to delete empty lines using sed: sed ‘/^$/d’ but I have no luck with it. For example, I have these lines: xxxxxx yyyyyy zzzzzz and I want it to be like: xxxxxx yyyyyy zzzzzz What should be the code for this? 17 Answers 17
I’m trying to use sed to clean up lines of URLs to extract just the domain. So from: http://www.suepearson.co.uk/product/174/71/3816/ I want: http://www.suepearson.co.uk/ (either with or without the trailing slash, it doesn’t matter) I have tried: sed ‘s|\(http:\/\/.*?\/\).*|\1|’ and (escaping the non-greedy quantifier) sed ‘s|\(http:\/\/.*\?\/\).*|\1|’ but I can not seem to get the non-greedy quantifier (?) … Read more
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 8 years ago. Improve this question What is the difference between awk and sed ? What kind of application are best … Read more
I would like to run a find and replace on an HTML file through the command line. My command looks something like this: sed -e s/STRING_TO_REPLACE/STRING_TO_REPLACE_IT/g index.html > index.html When I run this and look at the file afterward, it is empty. It deleted the contents of my file. When I run this after restoring … Read more
I need to repeatedly remove the first line from a huge text file using a bash script. Right now I am using sed -i -e “1d” $FILE – but it takes around a minute to do the deletion. Is there a more efficient way to accomplish this? 17 s 17 Try tail: tail -n +2 … Read more
Is there a “canonical” way of doing that? I’ve been using head -n | tail -1 which does the trick, but I’ve been wondering if there’s a Bash tool that specifically extracts a line (or a range of lines) from a file. By “canonical” I mean a program whose main function is doing that. 19 … Read more
How do I find and replace every occurrence of: subdomainA.example.com with subdomainB.example.com in every text file under the /home/www/ directory tree recursively? 36 s 36
