I have a huge text file (~1.5GB) with numerous lines ending with ".Ends". I need a linux oneliner (perl\ awk\ sed) to find the last place '.Ends' appear in the file and add a couple of li...

Need some unix shell basic here: For command that I see no "-" target in , say ed: print '%-2p\nq' | ed -s FILE Can I provide a stream from stdout of some cmd, rather than FILE name, as the dat...

I have several text files with different row numbers and I have to delete in all of them the third-to-last line . Here is a sample file: bear horse window potato berry cup Expected result for this...

Suppose I have opened a text file in ed, and the current line looks like this: This is sentence one. Here starts another one. Now I want to put a newline after one. , such that the new sentence ...

I want to replace a single line in a file with multiple lines, e.g., I want to replace a particular function call, say, foo(1,2) with if (a > 1) { foo(1,2) } else { bar(1,2) } How c...

I need your help on the Namespaces for XMLStarlet. (never saw a library that badly explained) I have an XML file like: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE ncx PUBLIC "-//NISO...

I'm studying the ed text editor. To exit from input mode, a user should enter a line a single period (.). Let's say I want to enter the period as text. I thought of a workaround: first, I insert...